Use UA_UInt64 for repeated job interval (#773)

UA_UInt32 for interval in nsec means maximum interval of 429 seconds -> too small

src/server/ua_server_worker.c

@@ -146,7 +146,7 @@ emptyDispatchQueue(UA_Server *server) {
 struct RepeatedJob {
     LIST_ENTRY(RepeatedJob) next;  /* Next element in the list */
     UA_DateTime nextTime;          /* The next time when the jobs are to be executed */
-    UA_UInt32 interval;            /* Interval in 100ns resolution */
+    UA_UInt64 interval;            /* Interval in 100ns resolution */
     UA_Guid id;                    /* Id of the repeated job */
     UA_Job job;                    /* The job description itself */
 };
@@ -174,17 +174,17 @@ addRepeatedJob(UA_Server *server, struct RepeatedJob * UA_RESTRICT rj)
 
 UA_StatusCode
 UA_Server_addRepeatedJob(UA_Server *server, UA_Job job,
-                         UA_UInt32 interval, UA_Guid *jobId) {
+                         UA_UInt32 intervalMs, UA_Guid *jobId) {
     /* the interval needs to be at least 5ms */
-    if(interval < 5)
+    if(intervalMs < 5)
         return UA_STATUSCODE_BADINTERNALERROR;
-    interval *= (UA_UInt32)UA_MSEC_TO_DATETIME; // from ms to 100ns resolution
+    UA_UInt64 interval = intervalMs * (UA_UInt32)UA_MSEC_TO_DATETIME; // from ms to 100ns resolution
 
     /* Create and fill the repeated job structure */
     struct RepeatedJob *rj = UA_malloc(sizeof(struct RepeatedJob));
     if(!rj)
         return UA_STATUSCODE_BADOUTOFMEMORY;
-    rj->nextTime = UA_DateTime_nowMonotonic() + interval;
+    rj->nextTime = UA_DateTime_nowMonotonic() + (UA_Int64) interval;
     rj->interval = interval;
     rj->id = UA_Guid_random();
     rj->job = job;
@@ -235,7 +235,7 @@ processRepeatedJobs(UA_Server *server, UA_DateTime current) {
 #endif
 
         /* Set the time for the next execution */
-        rj->nextTime += rj->interval;
+        rj->nextTime += (UA_Int64)rj->interval;
         if(rj->nextTime < current)
             rj->nextTime = current;