Revert "Disable integer sanitization for amrwbenc"

This reverts commit be773c3a8f86a6ee8a0e36c9f9c18055d97edb6f.

Reverting while investigating regression in AMR-WB encoding.

Bug: 26416048
Change-Id: I17d3b8a975770c6b5778610c1ff7928fce598e21
diff --git a/media/libstagefright/codecs/amrwbenc/Android.mk b/media/libstagefright/codecs/amrwbenc/Android.mk
index 4d12f82..77a7b1e 100644
--- a/media/libstagefright/codecs/amrwbenc/Android.mk
+++ b/media/libstagefright/codecs/amrwbenc/Android.mk
@@ -102,7 +102,7 @@
 
 LOCAL_CFLAGS += -Werror
 LOCAL_CLANG := true
-#LOCAL_SANITIZE := signed-integer-overflow
+LOCAL_SANITIZE := signed-integer-overflow
 
 include $(BUILD_STATIC_LIBRARY)
 
@@ -120,7 +120,7 @@
 
 LOCAL_CFLAGS += -Werror
 LOCAL_CLANG := true
-#LOCAL_SANITIZE := signed-integer-overflow
+LOCAL_SANITIZE := signed-integer-overflow
 
 LOCAL_STATIC_LIBRARIES := \
         libstagefright_amrwbenc