Server: Flush 'skyname' serverinfo before setting the .bsp one, to prevent

it from bleeding to maps that don't define 'skyname' from old configs.

src/client/sky.qc

@@ -21,6 +21,6 @@ Sky_Update(int force)
 {
 	if (g_strSkyName != serverkey("skyname") || force == TRUE) {
 		g_strSkyName = serverkey("skyname");
-		localcmd(sprintf("sky %s\n", g_strSkyName));
+		localcmd(sprintf("sky \"%s\"\n", g_strSkyName));
 	}
 }

src/server/entry.qc

@@ -533,6 +533,10 @@ worldspawn(void)
 	if (autocvar_sv_levelexec)
 		readcmd(sprintf("exec maps/%s.cfg\n", mapname));
 
+	/* we need to flush this, so that any leftover serverinfo
+	 * in the server-config gets overwritten */
+	forceinfokey(world, "skyname", "");
+
 	/* Set the default sky */
 	if (serverkeyfloat("*bspversion") == BSPVER_HL) {
 		if (!self.skyname) {