fix mistake in location of return

c/src/malloc.c

@@ -79,11 +79,11 @@ void *AllocInternal(void *heapStart, u32 size)
 
 					if (splitBlock->next != head)
 						splitBlock->next->prev = splitBlock;
+				}
 
 				return pos->data;
 			}
 		}
-		}
 
 		if (pos->next == head)
 			return NULL;