Juan Lang : crypt32: Only trace a usage match if it's not empty.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 30de1034858825a9467438407d0d905053a2ab70
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=30de1034858825a9467438407d0d905053a2ab70

Author: Juan Lang <juan.lang at gmail.com>
Date:   Fri Nov 20 12:07:10 2009 -0800

crypt32: Only trace a usage match if it's not empty.

---

 dlls/crypt32/chain.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/dlls/crypt32/chain.c b/dlls/crypt32/chain.c
index 0f2b5dd..a53b030 100644
--- a/dlls/crypt32/chain.c
+++ b/dlls/crypt32/chain.c
@@ -2456,12 +2456,15 @@ static void CRYPT_VerifyChainRevocation(PCERT_CHAIN_CONTEXT chain,
 
 static void dump_usage_match(LPCSTR name, const CERT_USAGE_MATCH *usageMatch)
 {
-    DWORD i;
+    if (usageMatch->Usage.cUsageIdentifier)
+    {
+        DWORD i;
 
-    TRACE_(chain)("%s: %s\n", name,
-     usageMatch->dwType == USAGE_MATCH_TYPE_AND ? "AND" : "OR");
-    for (i = 0; i < usageMatch->Usage.cUsageIdentifier; i++)
-        TRACE_(chain)("%s\n", usageMatch->Usage.rgpszUsageIdentifier[i]);
+        TRACE_(chain)("%s: %s\n", name,
+         usageMatch->dwType == USAGE_MATCH_TYPE_AND ? "AND" : "OR");
+        for (i = 0; i < usageMatch->Usage.cUsageIdentifier; i++)
+            TRACE_(chain)("%s\n", usageMatch->Usage.rgpszUsageIdentifier[i]);
+    }
 }
 
 static void dump_chain_para(const CERT_CHAIN_PARA *pChainPara)