Add corner case tests for diff-index and diff-files

diff --git a/pkt-line.c b/pkt-line.c
index b60526869a38bd20f800c275f7b42390c8bea1ee..355546a1ad844492234dc7ee91528c525af5610a 100644 (file)
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -5,7 +5,7 @@
  * Write a packetized stream, where each line is preceded by
  * its length (including the header) as a 4-byte hex number.
  * A length of 'zero' means end of stream (and a length of 1-3
- * would be an error). 
+ * would be an error).
  *
  * This is all pretty stupid, but we use this packetized line
  * format to make a streaming format possible without ever