Merge pull request #11661 from Alex-EEE/patch-1

mbed_rtc_time.h lacks an include guard

Author: 0xc0170

platform/mbed_rtc_time.h

@@ -15,6 +15,9 @@
  * limitations under the License.
  */
 
+#ifndef __MBED_RTC_TIME_H__
+#define __MBED_RTC_TIME_H__
+
 #include <time.h>
 
 #ifdef __cplusplus
@@ -129,3 +132,5 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz);
 
 /** @}*/
 /** @}*/
+
+#endif /* __MBED_RTC_TIME_H__ */