winhttp/tests: Free the certificate context after use.

dlls/winhttp/tests/Makefile.in

@@ -3,7 +3,7 @@ TOPOBJDIR = ../../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 TESTDLL   = winhttp.dll
-IMPORTS   = winhttp advapi32 kernel32
+IMPORTS   = winhttp crypt32 advapi32 kernel32
 
 CTESTS = \
 	notification.c \

dlls/winhttp/tests/winhttp.c

@@ -763,6 +763,7 @@ static void test_secure_connection(void)
     size = sizeof(cert);
     ret = WinHttpQueryOption(req, WINHTTP_OPTION_SERVER_CERT_CONTEXT, &cert, &size );
     ok(ret, "failed to retrieve certificate context %u\n", GetLastError());
+    CertFreeCertificateContext(cert);
 
     size = sizeof(bitness);
     ret = WinHttpQueryOption(req, WINHTTP_OPTION_SECURITY_KEY_BITNESS, &bitness, &size );