Apply fixes reported by Andreas Gruenbacher:

pass1.c (check_ext_attr): Skip zero-length EA entries.

problem.c: PR_1_EA_ALLOC_COLLISION shouldn't abort, but should prompt
	to clear the EA block.

diff --git a/e2fsck/problem.c b/e2fsck/problem.c
index 34a3784..dd215a1 100644
--- a/e2fsck/problem.c
+++ b/e2fsck/problem.c
@@ -610,7 +610,7 @@
 	/* Error EA allocation collision */
 	{ PR_1_EA_ALLOC_COLLISION,
 	  N_("@a @b %b is corrupt (allocation collision).  "),
-	  PROMPT_ABORT, 0},
+	  PROMPT_CLEAR, 0},
 	
 	/* Bad extended attribute name */
 	{ PR_1_EA_BAD_NAME,