[t:2795] Placate fussy compiler unhappy about test utility print_time_now().

git-svn-id: file:///svn/toku/tokudb@21899 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/test.h

@@ -240,7 +240,7 @@ void print_time_now(void) {
     char timestr[80];
     time_t now = time(NULL);
     format_time(&now, timestr);
-    printf(timestr);
+    printf("%s", timestr);
 }
 
 //Simulate as hard a crash as possible.