engine: host: ensure we always have right slashes under Windows

engine/common/host.c

@@ -1029,6 +1029,10 @@ void Host_InitCommon( int argc, char **argv, const char *progname, qboolean bCha
 #endif
 	}
 
+#if XASH_WIN32
+	COM_FixSlashes( host.rootdir );
+#endif
+
 	len = Q_strlen( host.rootdir );
 
 	if( len && host.rootdir[len - 1] == '/' )
@@ -1045,6 +1049,10 @@ void Host_InitCommon( int argc, char **argv, const char *progname, qboolean bCha
 			Q_strncpy( host.rodir, roDir, sizeof( host.rodir ));
 	}
 
+#if XASH_WIN32
+	COM_FixSlashes( host.rootdir );
+#endif
+
 	len = Q_strlen( host.rodir );
 
 	if( len && host.rodir[len - 1] == '/' )