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
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index fc595b3..ba8b5d7 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -150,7 +150,7 @@
 
 int main(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv, " llvm symbol table dumper\n");
-  PrintStackTraceOnErrorSignal();
+  sys::PrintStackTraceOnErrorSignal();
 
   ToolName = argv[0];
   if (BSDFormat) OutputFormat = bsd;