Fix build failure when dynamic allocation is not enabled.

When dynamic allocation is not enabled, vPortFree is not available. The current code used
vPortFree and this resulted in linker error. This commit removes the use of vPortFree when
dynamic allocation is not enabled.

FreeRTOS/Source/timers.c

@@ -301,7 +301,7 @@ BaseType_t xReturn = pdFAIL;
 		return pxNewTimer;
 	}
 
-#endif /* configSUPPORT_STATIC_ALLOCATION */
+#endif /* configSUPPORT_DYNAMIC_ALLOCATION */
 /*-----------------------------------------------------------*/
 
 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
@@ -820,6 +820,8 @@ TickType_t xTimeNow;
 					break;
 
 				case tmrCOMMAND_DELETE :
+					#if ( configSUPPORT_DYNAMIC_ALLOCATION == 1 )
+					{
 						/* The timer has already been removed from the active list,
 						just free up the memory if the memory was dynamically
 						allocated. */
@@ -831,6 +833,16 @@ TickType_t xTimeNow;
 						{
 							pxTimer->ucStatus &= ~tmrSTATUS_IS_ACTIVE;
 						}
+					}
+					#else
+					{
+						/* If dynamic allocation is not enabled, the memory
+						could not have been dynamically allocated. So there is
+						no need to free the memory - just mark the timer as
+						"not active". */
+						pxTimer->ucStatus &= ~tmrSTATUS_IS_ACTIVE;
+					}
+					#endif /* configSUPPORT_DYNAMIC_ALLOCATION */
 					break;
 
 				default	: