[gmime: 12/24] Fix out-of-bounds read in decode_domain_literal()

[Jeffrey Stedfast <fejj src gnome org>]

commit 02bd5f7d8a290878c4ff0b8aaef4bee81f34a306
Author: Jakub Wilk <jwilk jwilk net>
Date:   Sun Jul 30 23:21:41 2017 +0200

    Fix out-of-bounds read in decode_domain_literal()
    
    If a malformed address ended right after dtext, the original code would
    jump over the terminating null byte.

 gmime/gmime-parse-utils.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gmime/gmime-parse-utils.c b/gmime/gmime-parse-utils.c
index 4ade524..7c506cb 100644
--- a/gmime/gmime-parse-utils.c
+++ b/gmime/gmime-parse-utils.c
@@ -380,7 +380,8 @@ decode_domain_literal (const char **in, GString *domain)
                                     *inptr, *in));
                        
                        /* try and skip to the next char ?? */
-                       inptr++;
+                       if (*inptr)
+                               inptr++;
                }
        }