crypt32: Fix printing NULL strings.

[Francois Gouget]

---

This fixes a crash that occurred in the conformance tests on my Solaris 
VMs when tracing was turned on.

 dlls/crypt32/chain.c |    2 +-
 dlls/crypt32/oid.c   |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/dlls/crypt32/chain.c b/dlls/crypt32/chain.c
index 2c6732d..c5f6742 100644
--- a/dlls/crypt32/chain.c
+++ b/dlls/crypt32/chain.c
@@ -1668,7 +1668,7 @@ static LPCSTR filetime_to_str(const FILETIME *time)
     char dateFmt[80]; /* sufficient for all versions of LOCALE_SSHORTDATE */
     SYSTEMTIME sysTime;
 
-    if (!time) return NULL;
+    if (!time) return "(null)";
 
     GetLocaleInfoA(LOCALE_SYSTEM_DEFAULT, LOCALE_SSHORTDATE, dateFmt,
      sizeof(dateFmt) / sizeof(dateFmt[0]));
diff --git a/dlls/crypt32/oid.c b/dlls/crypt32/oid.c
index 9f998d9..d6b26f7 100644
--- a/dlls/crypt32/oid.c
+++ b/dlls/crypt32/oid.c
@@ -614,8 +614,8 @@ BOOL WINAPI CryptRegisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
     HKEY hKey;
     LPSTR szKey;
 
-    TRACE("(%x, %s, %s, %s, %s)\n", dwEncodingType, pszFuncName,
-     debugstr_a(pszOID), debugstr_w(pwszDll), pszOverrideFuncName);
+    TRACE("(%x, %s, %s, %s, %s)\n", dwEncodingType, debugstr_a(pszFuncName),
+          debugstr_a(pszOID), debugstr_w(pwszDll), debugstr_a(pszOverrideFuncName));
 
     /* Native does nothing pwszDll is NULL */
     if (!pwszDll)
-- 
1.7.5.4