Fix some unused variable, control reaches end of non-void function,
and uninitialized use options.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62270 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaLookup.cpp b/lib/Sema/SemaLookup.cpp
index cc9a36c..6ef93ce 100644
--- a/lib/Sema/SemaLookup.cpp
+++ b/lib/Sema/SemaLookup.cpp
@@ -490,7 +490,7 @@
   //   the result of the lookup.
   // FIXME: support using declarations!
   QualType SubobjectType;
-  int SubobjectNumber;
+  int SubobjectNumber = 0;
   for (BasePaths::paths_iterator Path = Paths.begin(), PathEnd = Paths.end();
        Path != PathEnd; ++Path) {
     const BasePathElement &PathElement = Path->back();