Merge pull request #205 from bryongloden/patch-2

Update unity_fixture.c (Thanks, Bryon!)

extras/fixture/src/unity_fixture.c

@@ -207,6 +207,9 @@ void* unity_malloc(size_t size)
     mem = (char*)&(guard[1]);
     memcpy(&mem[size], end, sizeof(end));
 
+#ifndef UNITY_FIXTURE_MALLOC_OVERRIDES_H_
+    free(guard);
+#endif
     return (void*)mem;
 }