6908299: Missed changes for 6664512 during the merge with 6879044

Reviewed-by: mchung, art

jdk/src/share/classes/sun/util/logging/PlatformLogger.java

@@ -535,6 +535,10 @@ public class PlatformLogger {
         }
 
         void doLog(int level, String msg, Object... params) {
+            int paramsNumber = (params != null) ? params.length : 0;
+            for (int i = 0; i < paramsNumber; i++) {
+                params[i] = String.valueOf(params[i]);
+            }
             LoggingSupport.log(javaLogger, levelObjects.get(level), msg, params);
         }