[Hotfix] hotfix for clang (#130)

src/c_api_common.cc

@@ -24,7 +24,7 @@ DLManagedTensor* CreateTmpDLManagedTensor(const TVMArgValue& arg) {
 
 PackedFunc ConvertNDArrayVectorToPackedFunc(const std::vector<NDArray>& vec) {
     auto body = [vec](TVMArgs args, TVMRetValue* rv) {
-        const size_t which = args[0];
+        const int which = args[0];
         if (which >= vec.size()) {
             LOG(FATAL) << "invalid choice";
         } else {

src/graph/graph_apis.cc

@@ -19,7 +19,7 @@ namespace {
 // Convert EdgeArray structure to PackedFunc.
 PackedFunc ConvertEdgeArrayToPackedFunc(const Graph::EdgeArray& ea) {
   auto body = [ea] (TVMArgs args, TVMRetValue* rv) {
-      int which = args[0];
+      const int which = args[0];
       if (which == 0) {
         *rv = std::move(ea.src);
       } else if (which == 1) {
@@ -36,7 +36,7 @@ PackedFunc ConvertEdgeArrayToPackedFunc(const Graph::EdgeArray& ea) {
 // Convert Subgraph structure to PackedFunc.
 PackedFunc ConvertSubgraphToPackedFunc(const Subgraph& sg) {
   auto body = [sg] (TVMArgs args, TVMRetValue* rv) {
-      int which = args[0];
+      const int which = args[0];
       if (which == 0) {
         Graph* gptr = new Graph();
         *gptr = std::move(sg.graph);