Really fix the build.

libcutils/mspace.c includes libc/bionic/dlmalloc.c, we need to
take care of the fact that any internal C library function cannot
be used from it.

Change-Id: I0bc81ae090b7ac2d464f26b97fc6b94a08cdad9c
diff --git a/libc/Android.mk b/libc/Android.mk
index f59fe43..dfbd57b 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -479,7 +479,8 @@
 		-DINET6 \
 		-I$(LOCAL_PATH)/private \
 		-DUSE_DL_PREFIX \
-		-DPOSIX_MISTAKE
+		-DPOSIX_MISTAKE \
+                -DLOG_ON_HEAP_ERROR \
 
 # these macro definitions are required to implement the
 # 'timezone' and 'daylight' global variables, as well as