RF: Explicitly catch ImportError, instead of catch-all

pauldmccarthy · pauldmccarthy · commit 16f191e73a0d · 2017-09-20T14:39:46.000+01:00
diff --git a/nibabel/openers.py b/nibabel/openers.py
@@ -18,7 +18,7 @@
 try:
     from indexed_gzip import SafeIndexedGzipFile
     HAVE_INDEXED_GZIP = True
-except:
+except ImportError:
     HAVE_INDEXED_GZIP = False
 
 
