Well, this is embarassing. Fix segfault reports.

CHANGELOG.asciidoc

@@ -62,6 +62,7 @@ Fixed
 - Fixed very long filenames when downloading `data://`-URLs.
 - Fixed ugly UI fonts on Windows when Liberation Mono is installed
 - Fixed crash when unbinding key from a section which doesn't exist in the config
+- Fixed report window after a segfault
 
 v0.5.1
 ------

qutebrowser/misc/crashsignal.py

@@ -72,7 +72,7 @@ class CrashHandler(QObject):
 
     def handle_segfault(self):
         """Handle a segfault from a previous run."""
-        data_dir = None
+        data_dir = standarddir.data()
         if data_dir is None:
             return
         logname = os.path.join(data_dir, 'crash.log')