CommonFuncs: Add GetWin32ErrorString().

1 files changed, 7 insertions, 1 deletions

diff --git a/Source/Core/Common/CommonFuncs.cpp b/Source/Core/Common/CommonFuncs.cpp
index a1e93455a2..0a546428b7 100644
--- a/Source/Core/Common/CommonFuncs.cpp
+++ b/Source/Core/Common/CommonFuncs.cpp
@@ -53,9 +53,15 @@ std::string LastStrerrorString()
 // This function might change the error code.
 std::string GetLastErrorString()
 {
+  return GetWin32ErrorString(GetLastError());
+}
+
+// Like GetLastErrorString() but if you have already queried the error code.
+std::string GetWin32ErrorString(DWORD error_code)
+{
   char error_message[BUFFER_SIZE];
 
-  FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
+  FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, error_code,
                  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_message, BUFFER_SIZE, nullptr);
   return std::string(error_message);
 }