Fix server video loading

From h3xx:
There is a bug whereby, on some systems, when a command such as "map
*ntro.cin+base1" (as it is when starting Quake2 vanilla, defined in
default.cfg) is issued, the server gives the error that it can't find
"maps/ntro.inn.bsp" even though "video/ntro.cin" exists. After hacking at
this problem for a couple hours, I finally fixed it in two lines; the
problem lies in how the strings are used.

I am unsure what caused this problem to surface in one of my machines and
not the other (they both had exactly the same software), but this patch
fixes the problem on the one that was having it, and doesn't affect the one
that wasn't having it. Due to how I solved this problem, it would lead me
to believe that this was a simple programming mistake.

src/sv_ccmds.c

@@ -476,6 +476,7 @@ void SV_GameMap_f(void){
 	if(map[0] == '*'){
 		// wipe all the *.sav files
 		SV_WipeSavegame("current");
+		++map;
 	} else {	// save the map just exited
 		if(sv.state == ss_game){
 			// clear all the client inuse flags before saving so that
@@ -497,7 +498,7 @@ void SV_GameMap_f(void){
 	}
 	
 	// start up the next map
-	SV_Map(false, Cmd_Argv(1), false);
+	SV_Map(false, map, false);
 	
 	// archive server state
 	strncpy(svs.mapcmd, Cmd_Argv(1), sizeof(svs.mapcmd) - 1);