If available, add map title into crash log

src/sdl/i_system.c

@@ -178,6 +178,7 @@ static char returnWadPath[256];
 #include "../d_net.h"
 #include "../g_game.h"
 #include "../filesrch.h"
+#include "../z_zone.h" // Z_Free
 #include "endtxt.h"
 #include "sdlmain.h"
 
@@ -344,7 +345,17 @@ static void write_backtrace(bt_crash_reason_t reason)
 	fprintf(out, "Compiled: %s %s, commit %s, branch %s\n", compdate, comptime, comprevision, compbranch);
 
 	if (gamestate == GS_LEVEL)
-		fprintf(out, "Game map: %s\n", G_BuildMapName(gamemap));
+	{
+		char *title = G_BuildMapTitle(gamemap);
+
+		if (title)
+		{
+			fprintf(out, "Game map: %s (%s)\n", title, G_BuildMapName(gamemap));
+			Z_Free(title);
+		}
+		else
+			fprintf(out, "Game map: %s\n", G_BuildMapName(gamemap));
+	}
 
 	fprintf(out, "Time of crash: %s\n", asctime(timeinfo));