The functions in Signal.h are now in the llvm::sys namespace - adjust

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16091 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-prof/llvm-prof.cpp

@@ -108,7 +108,7 @@ namespace {
 
 int main(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv, " llvm profile dump decoder\n");
-  PrintStackTraceOnErrorSignal();
+  sys::PrintStackTraceOnErrorSignal();
 
   // Read in the bytecode file...
   std::string ErrorMessage;