lib: os: various places fix missing final else

The lib/os/ had several places missing final else
statement in the if else if construct. This commit adds
else {} or simple refactor to comply with coding guideline 15.7.
- cbprintf_complete.c
- cbprintf_nano.c
- heap-validate.c
- heap.c
- onoff.c
- p4wq.c
- sem.c

Also resolves the checkpatch issue of comments should align * on
each line.

Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>

lib/os/cbprintf_complete.c

@@ -557,6 +557,8 @@ int_conv:
 			default:
 				break;
 			}
+		} else {
+			;
 		}
 		break;
 
@@ -586,6 +588,8 @@ int_conv:
 		} else if ((conv->length_mod != LENGTH_NONE)
 			   && (conv->length_mod != LENGTH_UPPER_L)) {
 			conv->invalid = true;
+		} else {
+			;
 		}
 
 		break;
@@ -802,6 +806,8 @@ static char *encode_uint(uint_value_type value,
 			conv->altform_0 = true;
 		} else if (radix == 16) {
 			conv->altform_0c = true;
+		} else {
+			;
 		}
 	}
 
@@ -878,6 +884,8 @@ static char *encode_float(double value,
 		*sign = '+';
 	} else if (conv->flag_space) {
 		*sign = ' ';
+	} else {
+		;
 	}
 
 	/* Extract the non-negative offset exponent and fraction.  Record
@@ -1383,21 +1391,23 @@ int cbvprintf(cbprintf_cb out, void *ctx, const char *fp, va_list ap)
 		/* If dynamic width is specified, process it,
 		 * otherwise set with if present.
 		 */
+		if (conv->width_present) {
 			if (conv->width_star) {
 				width = va_arg(ap, int);
-
 				if (width < 0) {
 					conv->flag_dash = true;
 					width = -width;
 				}
-		} else if (conv->width_present) {
+			} else {
 				width = conv->width_value;
 			}
+		}
 
 		/* If dynamic precision is specified, process it, otherwise
 		 * set precision if present.  For floating point where
 		 * precision is not present use 6.
 		 */
+		if (conv->prec_present) {
 			if (conv->prec_star) {
 				int arg = va_arg(ap, int);
 
@@ -1406,9 +1416,10 @@ int cbvprintf(cbprintf_cb out, void *ctx, const char *fp, va_list ap)
 				} else {
 					precision = arg;
 				}
-		} else if (conv->prec_present) {
+			} else {
 				precision = conv->prec_value;
 			}
+		}
 
 		/* Reuse width and precision memory in conv for value
 		 * padding counts.

lib/os/cbprintf_nano.c

@@ -204,6 +204,8 @@ start:
 			} else if (special == '+') {
 				prefix = "+";
 				min_width--;
+			} else {
+				;
 			}
 			data_len = convert_value(d, 10, 0, buf + sizeof(buf));
 			data = buf + sizeof(buf) - data_len;

lib/os/heap-validate.c

@@ -207,7 +207,7 @@ static bool rand_alloc_choice(struct z_heap_stress_rec *sr)
 		return true;
 	} else if (sr->blocks_alloced >= sr->nblocks) {
 		return false;
-	}
+	} else {
 
 		/* The way this works is to scale the chance of choosing to
 		 * allocate vs. free such that it's even odds when the heap is
@@ -235,6 +235,7 @@ static bool rand_alloc_choice(struct z_heap_stress_rec *sr)
 
 		return rand32() > free_chance;
 	}
+}
 
 /* Chooses a size of block to allocate, logarithmically favoring
  * smaller blocks (i.e. blocks twice as large are half as frequent

lib/os/heap.c

@@ -361,6 +361,8 @@ void *sys_heap_aligned_realloc(struct sys_heap *heap, void *ptr,
 		merge_chunks(h, c, rc);
 		set_chunk_used(h, c, true);
 		return ptr;
+	} else {
+		;
 	}
 
 	/* Fallback: allocate and copy */

lib/os/onoff.c

@@ -222,6 +222,8 @@ static int process_recheck(struct onoff_manager *mgr)
 	} else if ((state == ONOFF_STATE_ERROR)
 		   && !sys_slist_is_empty(&mgr->clients)) {
 		evt = EVT_RESET;
+	} else {
+		;
 	}
 
 	return evt;
@@ -406,6 +408,8 @@ static void process_event(struct onoff_manager *mgr,
 		} else if ((mgr->flags & ONOFF_FLAG_RECHECK) != 0) {
 			mgr->flags &= ~ONOFF_FLAG_RECHECK;
 			evt = EVT_RECHECK;
+		} else {
+			;
 		}
 
 		state = mgr->flags & ONOFF_STATE_MASK;

lib/os/p4wq.c

@@ -63,6 +63,8 @@ static inline bool item_lessthan(struct k_p4wq_work *a, struct k_p4wq_work *b)
 	} else if ((a->priority == b->priority) &&
 		   (a->deadline != b->deadline)) {
 		return a->deadline - b->deadline > 0;
+	} else {
+		;
 	}
 	return false;
 }

lib/os/sem.c

@@ -74,8 +74,9 @@ int sys_sem_give(struct sys_sem *sem)
 		}
 	} else if (old_value >= sem->limit) {
 		return -EAGAIN;
+	} else {
+		;
 	}
-
 	return ret;
 }