regcomp.c: Move some code to within a block

This code is irrelevant unless the condition of the block immediately
before it is TRUE, so move it to within that block.

regcomp.c

@@ -19345,10 +19345,9 @@ S_optimize_regclass(pTHX_
             single_range = TRUE;
         }
         invlist_iterfinish(cp_list);
-    }
 
-    /* If we know at compile time that this matches every possible code point,
-     * any run-time dependencies don't matter */
+        /* If we know at compile time that this matches every possible code
+         * point, any run-time dependencies don't matter */
     if (start[0] == 0 && end[0] == UV_MAX) {
         if (*invert) {
             goto return_OPFAIL;
@@ -19357,6 +19356,7 @@ S_optimize_regclass(pTHX_
             goto return_SANY;
         }
     }
+    }
 
     /* Similarly, for /l posix classes, if both a class and its complement
      * match, any run-time dependencies don't matter */