check-code: catch unnecessary s.strip().split() calls

contrib/check-code.py

@@ -199,6 +199,7 b' pypats = ['
      "always assign an opened file to a variable, and close it afterwards"),
     (r'(?i)descendent', "the proper spelling is descendAnt"),
     (r'\.debug\(\_', "don't mark debug messages for translation"),
+    (r'\.strip\(\)\.split\(\)', "no need to strip before splitting"),
   ],
   # warnings
   [