Don't write windows os minidumps if running from a debugger.

indra/newview/llwindebug.cpp

@@ -91,12 +91,15 @@ LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop)
 }
 
 // static
-void  LLWinDebug::init()
+void LLWinDebug::init()
 {
 	static bool s_first_run = true;
 	// Load the dbghelp dll now, instead of waiting for the crash.
 	// Less potential for stack mangling
 
+	// Don't install vectored exception handler if being debugged.
+	if(IsDebuggerPresent()) return;
+
 	if (s_first_run)
 	{
 		// First, try loading from the directory that the app resides in.