Debugger: Re-use flexible upper limit when cutting off string data

A fixed 100 is too inflexible.

Change-Id: I86e996157ea49c14078b3833a5b08dc53d25d1aa
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/dumper/gbridge.py

@@ -1686,8 +1686,7 @@ class Dumper:
         if limit is None:
             return size
         if limit == 0:
-            #return min(size, qqStringCutOff)
-            return min(size, 100)
+            return min(size, qqStringCutOff)
         return min(size, limit)
 
     def putName(self, name):