MSVC warning fixes; patch by Stein Roger!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78405 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/bugpoint.cpp b/tools/bugpoint/bugpoint.cpp
index 573a406..d00036a 100644
--- a/tools/bugpoint/bugpoint.cpp
+++ b/tools/bugpoint/bugpoint.cpp
@@ -129,7 +129,7 @@
     errs() << "Tool execution error: " << TEE.what() << '\n';
   } catch (const std::string& msg) {
     errs() << argv[0] << ": " << msg << "\n";
-  } catch (const std::bad_alloc &e) {
+  } catch (const std::bad_alloc&) {
     errs() << "Oh no, a bugpoint process ran out of memory!\n"
               "To increase the allocation limits for bugpoint child\n"
               "processes, use the -mlimit option.\n";