Fix clock_gettime issue on newer MinGW builds

Fixes lp: #1853168

src/libCom/osi/osiClockTime.c

@@ -41,7 +41,7 @@ static struct {
 static epicsThreadOnceId onceId = EPICS_THREAD_ONCE_INIT;
 
 
-#ifdef CLOCK_REALTIME
+#if defined(CLOCK_REALTIME) && !defined(_WIN32)
 /* This code is not used on systems without Posix CLOCK_REALTIME,
  * but the only way to detect that is from the OS headers, so the
  * Makefile can't exclude compiling this file on those systems.
@@ -229,7 +229,11 @@ static int ClockTimeGetCurrent(epicsTimeStamp *pDest)
     return 0;
 }
 
-#endif /* CLOCK_REALTIME */
+/* Used in Report function below: */
+#define UNINIT_ERROR "initialized"
+#else
+#define UNINIT_ERROR "available"
+#endif /* CLOCK_REALTIME && !WIN32 */
 
 /* Allow the following report routine to be compiled anyway
  * to avoid getting a build warning from ranlib.
@@ -242,13 +246,7 @@ int ClockTime_Report(int level)
     char timebuf[32];
 
     if (onceId == EPICS_THREAD_ONCE_INIT) {
-        printf("OS Clock driver not %s.\n",
-#ifdef CLOCK_REALTIME
-            "initialized"
-#else
-            "available"
-#endif /* CLOCK_REALTIME */
-            );
+        puts("OS Clock driver not " UNINIT_ERROR);
     }
     else if (ClockTimePvt.synchronize == CLOCKTIME_SYNC) {
         int synchronized, syncFromPriority;