Fix multiple inclusion guards to match new pathnames

Change-Id: Id7735be1d75bc315733b1773fba45c1deb8ace43
diff --git a/runtime/gc/space/dlmalloc_space.h b/runtime/gc/space/dlmalloc_space.h
index 00df0e6..8a4314c 100644
--- a/runtime/gc/space/dlmalloc_space.h
+++ b/runtime/gc/space/dlmalloc_space.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ART_SRC_GC_SPACE_DLMALLOC_SPACE_H_
-#define ART_SRC_GC_SPACE_DLMALLOC_SPACE_H_
+#ifndef ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_H_
+#define ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_H_
 
 #include "gc/allocator/dlmalloc.h"
 #include "space.h"
@@ -182,4 +182,4 @@
 }  // namespace gc
 }  // namespace art
 
-#endif  // ART_SRC_GC_SPACE_DLMALLOC_SPACE_H_
+#endif  // ART_RUNTIME_GC_SPACE_DLMALLOC_SPACE_H_