MINOR: stats-file: add the filename in the warning

Add the name of the stats-file in the warning so it's clear that the
warning was provoked by the stats-file and not the config file.

Author: wlallemand

src/stats-file.c

@@ -358,19 +358,19 @@ void apply_stats_file(void)
 
 	file = fopen(global.stats_file, "r");
 	if (!file) {
-		ha_warning("config: Can't load stats file: cannot open file.\n");
+		ha_warning("config: Can't load stats-file '%s': cannot open file.\n", global.stats_file);
 		return;
 	}
 
 	/* Generate stat columns map indexed by name. */
 	if (generate_stat_tree(&st_tree, stat_cols_px)) {
-		ha_warning("config: Can't load stats file: not enough memory.\n");
+		ha_warning("config: Can't load stats-file '%s': not enough memory.\n", global.stats_file);
 		goto out;
 	}
 
 	line = malloc(sizeof(char) * LINESIZE);
 	if (!line) {
-		ha_warning("config: Can't load stats file: line alloc error.\n");
+		ha_warning("config: Can't load stats-file '%s': line alloc error.\n", global.stats_file);
 		goto out;
 	}
 
@@ -388,25 +388,25 @@ void apply_stats_file(void)
 		if (*istptr(istline) == '#') {
 			if (parse_header_line(istline, &st_tree, &domain, cols)) {
 				if (!valid_format) {
-					ha_warning("config: Invalid stats-file format.\n");
+					ha_warning("config: Invalid stats-file format in file '%s'.\n", global.stats_file);
 					break;
 				}
 
-				ha_warning("config: Ignored stats-file header line '%d'.\n", linenum);
+				ha_warning("config: Ignored stats-file header line '%d' in file '%s'.\n", linenum, global.stats_file);
 			}
 
 			valid_format = 1;
 		}
 		else if (domain != STFILE_DOMAIN_UNSET) {
 			if (parse_stat_line(istline, domain, cols))
-				ha_warning("config: Ignored stats-file line %d.\n", linenum);
+				ha_warning("config: Ignored stats-file line %d in file '%s'.\n", linenum, global.stats_file);
 		}
 		else {
 			/* Stop parsing if first line is not a valid header.
 			 * Allows to immediately stop reading garbage file.
 			 */
 			if (!valid_format) {
-				ha_warning("config: Invalid stats-file format.\n");
+				ha_warning("config: Invalid stats-file format in file '%s'.\n", global.stats_file);
 				break;
 			}
 		}