Java used-by API list generation

Update the java used by script to fix the xml format when dexdeps processing resource only APKs

Test: TARGET_BUILD_APPS=com.android.adbd m dist apps_only
Change-Id: I61a58d7c739e74a571e97166a7c9b4091e6f8da0

scripts/gen_java_usedby_apex.sh

@@ -32,7 +32,7 @@ genUsedByList() {
   touch "$out"
   echo "<externals>" >> "$out"
   for x in "$@"; do
-    "$dexdeps" "$x" >> "$out" || true
+    "$dexdeps" "$x" >> "$out" || echo "</external>" >> "$out"
   done
   echo "</externals>" >> "$out"
 }