systemc: Make verify.py ignore a warning.

Change-Id: Ia887b7195d84d0ba9e77370d7b928e201ca78731
Reviewed-on: https://gem5-review.googlesource.com/12055
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/systemc/tests/verify.py

@@ -192,7 +192,8 @@ class LogChecker(Checker):
 
     ref_filt = merge_filts(
         r'^\nInfo: /OSCI/SystemC: Simulation stopped by user.\n',
-        r'^SystemC Simulation\n'
+        r'^SystemC Simulation\n',
+        r'^\nWarning: .*\nIn file: .*\n'
     )
     test_filt = merge_filts(
         r'^Global frequency set at \d* ticks per second\n'