Only allow streaming exactly type 'bool' to a DiagnosticBuilder, not anything
that implicitly converts to 'bool' (such as pointers, and the first operand of
?:). Clean up issues found by this. Patch by Stephan Tolksdorf!

llvm-svn: 203735
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index fa7e16c..c318b60 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1192,13 +1192,13 @@
         Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
           << InputArg->getAsString(Args)
           << !!FinalPhaseArg
-          << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
+          << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
       else
         Diag(clang::diag::warn_drv_input_file_unused)
           << InputArg->getAsString(Args)
           << getPhaseName(InitialPhase)
           << !!FinalPhaseArg
-          << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
+          << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
       continue;
     }