Fix deployment of clang library

Since the plugins moved in 6aad96d8,
the rpath of the clang code model plugin was broken for deployed clang library.

Change-Id: I5d59390540918c73a2cd217bb5ebf8f947122f01
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

scripts/deployqtHelper_mac.sh

@@ -60,6 +60,6 @@ if [ $LLVM_INSTALL_DIR ]; then
     if [ ! -f "$_CLANG_CODEMODEL_LIB" ]; then
         _CLANG_CODEMODEL_LIB="$1/Contents/PlugIns/libClangCodeModel.dylib"
     fi
-    xcrun install_name_tool -rpath "$LLVM_INSTALL_DIR/lib" "@loader_path/.." "$_CLANG_CODEMODEL_LIB" || true
+    xcrun install_name_tool -rpath "$LLVM_INSTALL_DIR/lib" "@loader_path" "$_CLANG_CODEMODEL_LIB" || true
 fi