From: Marcel Raad <Marcel.Raad@teamviewer.com>
Date: Sun, 8 Jul 2018 15:16:34 +0000 (+0200)
Subject: schannel: fix -Wsign-compare warning
X-Git-Tag: curl-7_61_0~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=424f1cfefbace57e5873e614a43ff14b251bbc7e;p=curl

schannel: fix -Wsign-compare warning

MinGW warns:
/lib/vtls/schannel.c:219:64: warning: signed and unsigned type in
conditional expression [-Wsign-compare]

Fix this by casting the ptrdiff_t to size_t as we know it's positive.

Closes https://github.com/curl/curl/pull/2721
---

diff --git a/lib/vtls/schannel.c b/lib/vtls/schannel.c
index b72542225..382efb525 100644
--- a/lib/vtls/schannel.c
+++ b/lib/vtls/schannel.c
@@ -216,7 +216,7 @@ get_alg_id_by_name(char *name)
 {
   char tmp[LONGEST_ALG_ID] = { 0 };
   char *nameEnd = strchr(name, ':');
-  size_t n = nameEnd ? min(nameEnd - name, LONGEST_ALG_ID - 1) : \
+  size_t n = nameEnd ? min((size_t)(nameEnd - name), LONGEST_ALG_ID - 1) : \
     min(strlen(name), LONGEST_ALG_ID - 1);
   strncpy(tmp, name, n);
   tmp[n] = 0;