Move suspect string uop behind debug control

Author: newby

csqc/events.qc

@@ -310,9 +310,15 @@ string cached_timer;
 string GetGrenTimerSound() {
     string wav = CVARS(FOCMD_GRENTIMERSOUND);
 
-    if (cached_timer != wav) {
-        precache_sound(wav);
-        cached_timer = wav;
+    // The string NE-uop below is suspect in crashes.  Possible interaction
+    // with cvar_string implementation.  Hopefully the migration to autocvar
+    // resolves this, but also put it behind a debug control temporarily so we
+    // can test with/without.
+    if (CVARF(fo_grentimer_debug) & 8 == 1) {
+        if (cached_timer != wav) {
+            precache_sound(wav);
+            cached_timer = wav;
+        }
     }
     return wav;
 }