An easy case where GCC should really be able to work out that the value is only

used if IsInDevelopmentTree is 'true'.  But it doesn't, so help it out.

llvm-svn: 151244

tools/llvm-config/llvm-config.cpp

@@ -206,6 +206,7 @@ int main(int argc, char **argv) {
     ActiveObjRoot = LLVM_OBJ_ROOT;
   } else {
     IsInDevelopmentTree = false;
+    DevelopmentTreeLayout = MakefileStyle; // Initialized to avoid warnings.
   }
 
   // Compute various directory locations based on the derived location