control reaches end of non-void function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75714 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/ToolRunner.cpp b/tools/bugpoint/ToolRunner.cpp
index 503a5dd..62290f9 100644
--- a/tools/bugpoint/ToolRunner.cpp
+++ b/tools/bugpoint/ToolRunner.cpp
@@ -689,6 +689,8 @@
         RemoteClientStatus << ".\n" << std::flush;
     }
   }
+
+  return 0;
 }
 
 int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,