[Xcb] [PATCH 2/2] auth: use snprintf() return value

[Julien Danjou]

That save us from a strlen().

Signed-off-by: Julien Danjou <julien at danjou.info>
---
 src/xcb_auth.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/xcb_auth.c b/src/xcb_auth.c
index 1645ce8..7730c18 100644
--- a/src/xcb_auth.c
+++ b/src/xcb_auth.c
@@ -94,6 +94,7 @@ static Xauth *get_authptr(struct sockaddr *sockname, unsigned int socknamelen,
     unsigned short family;
     char hostnamebuf[256];   /* big enough for max hostname */
     char dispbuf[40];   /* big enough to hold more than 2^64 base 10 */
+    int dispbuflen;
 
     family = FamilyLocal; /* 256 */
     switch(sockname->sa_family)
@@ -124,7 +125,7 @@ static Xauth *get_authptr(struct sockaddr *sockname, unsigned int socknamelen,
         return 0;   /* cannot authenticate this family */
     }
 
-    snprintf(dispbuf, sizeof(dispbuf), "%d", display);
+    dispbuflen = snprintf(dispbuf, sizeof(dispbuf), "%d", display);
 
     if (family == FamilyLocal) {
         if (gethostname(hostnamebuf, sizeof(hostnamebuf)) == -1)
@@ -135,7 +136,7 @@ static Xauth *get_authptr(struct sockaddr *sockname, unsigned int socknamelen,
 
     return XauGetBestAuthByAddr (family,
                                  (unsigned short) addrlen, addr,
-                                 (unsigned short) strlen(dispbuf), dispbuf,
+                                 (unsigned short) dispbuflen, dispbuf,
                                  N_AUTH_PROTOS, authnames, authnamelens);
 }
 
-- 
1.6.2.2