Python: Minor cleanup in regex.qll

Author: RasmusWL

python/ql/src/semmle/python/regex.qll

@@ -19,22 +19,20 @@ private predicate re_module_function(string name, int flags) {
 predicate used_as_regex(Expr s, string mode) {
     (s instanceof Bytes or s instanceof Unicode)
     and
-    exists(ModuleValue re | re = Module::named("re") |
-        /* Call to re.xxx(regex, ... [mode]) */
-        exists(CallNode call, string name |
-            call.getArg(0).refersTo(_, _, s.getAFlowNode()) and
-            call.getFunction().pointsTo(re.attr(name)) |
-            mode = "None"
-            or
-            exists(Value obj |
-                mode = mode_from_mode_object(obj) |
-                exists(int flags_arg |
-                    re_module_function(name, flags_arg) and
-                    call.getArg(flags_arg).pointsTo(obj)
-                )
-                or
-                call.getArgByName("flags").pointsTo(obj)
+    /* Call to re.xxx(regex, ... [mode]) */
+    exists(CallNode call, string name |
+        call.getArg(0).refersTo(_, _, s.getAFlowNode()) and
+        call.getFunction().pointsTo(Module::named("re").attr(name)) |
+        mode = "None"
+        or
+        exists(Value obj |
+            mode = mode_from_mode_object(obj) |
+            exists(int flags_arg |
+                re_module_function(name, flags_arg) and
+                call.getArg(flags_arg).pointsTo(obj)
             )
+            or
+            call.getArgByName("flags").pointsTo(obj)
         )
     )
 }