fix(cmd): don't catch progress handler exceptions

Fixes gitpython-developers#435

Author: Byron

doc/source/changes.rst

@@ -2,6 +2,12 @@
 Changelog
 =========
 
+2.0.3 - Fixes
+=============
+
+* Fix: progress handler exceptions are not caught anymore, which would usually just hide bugs
+  previously.
+
 2.0.2 - Fixes
 =============
 

git/cmd.py

@@ -113,12 +113,7 @@ def _read_lines_from_fno(fno, last_buf_list):
     def _dispatch_single_line(line, handler):
         line = line.decode(defenc)
         if line and handler:
-            try:
-                handler(line)
-            except Exception:
-                # Keep reading, have to pump the lines empty nontheless
-                log.error("Line handler exception on line: %s", line, exc_info=True)
-            # end
+            handler(line)
         # end dispatch helper
     # end single line helper