Remove use of std::map<>::emplace which is not supported on some older versions of libstdc++

llvm-svn: 251346
diff --git a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
index 6c81ec6..aa24dd9 100644
--- a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
@@ -530,7 +530,7 @@
 
   if (!Objects.first) {
     // Failed to find valid object file.
-    Modules.emplace(ModuleName, nullptr);
+    Modules.insert(make_pair(ModuleName, nullptr));
     return nullptr;
   }
   std::unique_ptr<DIContext> Context;