Merge pull request #4979 from blueyed/minor

Minor: whitespace, typo, docs

src/_pytest/main.py

@@ -225,7 +225,7 @@ def wrap_session(config, doit):
             config.notify_exception(excinfo, config.option)
             session.exitstatus = EXIT_INTERNALERROR
             if excinfo.errisinstance(SystemExit):
-                sys.stderr.write("mainloop: caught Spurious SystemExit!\n")
+                sys.stderr.write("mainloop: caught unexpected SystemExit!\n")
 
     finally:
         excinfo = None  # Explicitly break reference cycle.

src/_pytest/warnings.py

@@ -103,8 +103,9 @@ def catch_warnings_for_item(config, ihook, when, item):
 
 
 def warning_record_to_str(warning_message):
-    """Convert a warnings.WarningMessage to a string, taking in account a lot of unicode shenaningans in Python 2.
+    """Convert a warnings.WarningMessage to a string.
 
+    This takes lot of unicode shenaningans into account for Python 2.
     When Python 2 support is dropped this function can be greatly simplified.
     """
     warn_msg = warning_message.message