logging: Use ISO 8601 time format for logging

Switch locale-aware timestamping for logging / crash handling to %H:%M:%S

Author: Dankirk

frontend/OBSApp.cpp

@@ -276,7 +276,7 @@ string CurrentDateTimeString()
 	struct tm tstruct;
 	char buf[80];
 	tstruct = *localtime(&now);
-	strftime(buf, sizeof(buf), "%Y-%m-%d, %X", &tstruct);
+	strftime(buf, sizeof(buf), "%Y-%m-%d, %T", &tstruct);
 	return buf;
 }
 

libobs/obs-win-crash-handler.c

@@ -245,7 +245,7 @@ static inline void write_header(struct exception_handler_data *data)
 	time_t now = time(0);
 	struct tm ts;
 	ts = *localtime(&now);
-	strftime(date_time, sizeof(date_time), "%Y-%m-%d, %X", &ts);
+	strftime(date_time, sizeof(date_time), "%Y-%m-%d, %T", &ts);
 
 	const char *obs_bitness;
 	if (sizeof(void *) == 8)