Fix variable names for Clang-based compilation.

Change-Id: I69b28110e9fda63abb3770da7a1127af4e1f2963
diff --git a/slang_rs.cpp b/slang_rs.cpp
index 645e8c8..11b7940 100644
--- a/slang_rs.cpp
+++ b/slang_rs.cpp
@@ -73,11 +73,11 @@
           E = mRSContext->exportable_end();
        I != E;
        I++) {
-    RSExportable *E = *I;
-    if (E->getKind() != RSExportable::EX_TYPE)
+    RSExportable *RSE = *I;
+    if (RSE->getKind() != RSExportable::EX_TYPE)
       continue;
 
-    RSExportType *ET = static_cast<RSExportType *>(E);
+    RSExportType *ET = static_cast<RSExportType *>(RSE);
     if (ET->getClass() != RSExportType::ExportClassRecord)
       continue;
 
diff --git a/slang_rs_object_ref_count.cpp b/slang_rs_object_ref_count.cpp
index b81dd96..d2c088c 100644
--- a/slang_rs_object_ref_count.cpp
+++ b/slang_rs_object_ref_count.cpp
@@ -382,9 +382,9 @@
           E = mRSO.end();
         I != E;
         I++) {
-    clang::Stmt *E = ClearRSObject(*I);
-    if (E) {
-      RSClearObjectCalls.push_back(E);
+    clang::Stmt *S = ClearRSObject(*I);
+    if (S) {
+      RSClearObjectCalls.push_back(S);
     }
   }
   if (RSClearObjectCalls.size() > 0) {