change string comparison to type comparison

Signed-off-by: arezaii <ahmad.rezaii@hpe.com>

modules/internal/ChapelBase.chpl

@@ -1444,7 +1444,7 @@ module ChapelBase {
       // string to a type. Otherwise, we can't resolve chpl_debug_writeln in
       // `range.these`
       { var dummyRange = 1..0; for i in dummyRange {} }
-      if t:string == "regex(string)" || t:string == "regex(bytes)" then
+      if t == regex(string) || t == regex(bytes) then
         return compile(str);
       else
         return str:t;