Fix make-release.sh

Quoting "$HOST_FLAGS" has detrimental effect when it contains
multiple flags

Change-Id: I7c1193772e937808f2bfde809bffb31ab681284f
diff --git a/build/tools/make-release.sh b/build/tools/make-release.sh
index 954837d..cc2ae67 100755
--- a/build/tools/make-release.sh
+++ b/build/tools/make-release.sh
@@ -226,7 +226,7 @@
     PREBUILT_DIR="$RELEASE_DIR/prebuilt"
     if timestamp_check build-host-prebuilts; then
         dump "Building host toolchain binaries..."
-        run $ANDROID_NDK_ROOT/build/tools/rebuild-all-prebuilt.sh --package-dir="$PREBUILT_DIR" --build-dir="$RELEASE_DIR/build" "$TOOLCHAIN_SRCDIR" "$HOST_FLAGS"
+        run $ANDROID_NDK_ROOT/build/tools/rebuild-all-prebuilt.sh --package-dir="$PREBUILT_DIR" --build-dir="$RELEASE_DIR/build" "$TOOLCHAIN_SRCDIR" $HOST_FLAGS
         fail_panic "Can't build $HOST_SYSTEM binaries."
         timestamp_set build-host-prebuilts
     fi