Merge pull request #1748 from elanthia-online/overwatch-v1.3.1

[overwatch.lic] v1.3.1 fix for Ruby constant redefinition warning

scripts/overwatch.lic

@@ -6,9 +6,11 @@
   contributors: FarFigNewGut, Nisugi
           game: Gemstone
           tags: hunting, target, hidden, bandits
-       version: 1.3.0
+       version: 1.3.1
 
   Improvements:
+  v1.3.1 (2025-01-18)
+    - fix for constant redefinition Ruby warning
   v1.3.0 (2024-11-15)
     - added detection of Covert Arts - Keen Eye
     - bugfix OverWatch.push_revealed_targets to not push into GameObj.npcs if already exists
@@ -38,7 +40,7 @@ module OverWatch
   @hidden_targets = nil
   @debug = false
 
-  HIDING_REGEX = Regexp.union(
+  HIDING_REGEX ||= Regexp.union(
     /<pushBold\/>\w+ <a exist="\d+" noun="\w+">[^<]+<\/a><popBold\/> slips into hiding\./,
     /flies out of the shadows toward you\!/, # You being attacked
     /A faint silvery light flickers from the shadows\./, # Hidden Bandits