AAPT: Don't try to rewrite String constants when loading shared lib

Bug:20138255
Change-Id: Ieb6a31ee9afe0de3d1c99b21f78aa48fe07015c6
diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index 5d20815..7751783 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -2120,7 +2120,7 @@
     size_t N = symbols->getSymbols().size();
     for (i=0; i<N; i++) {
         const AaptSymbolEntry& sym = symbols->getSymbols().valueAt(i);
-        if (sym.typeCode == AaptSymbolEntry::TYPE_UNKNOWN) {
+        if (sym.typeCode != AaptSymbolEntry::TYPE_INT32) {
             continue;
         }
         if (!assets->isJavaSymbol(sym, includePrivate)) {