Fixup of formatted output of file size in 'File exists' dialog window.

The %j modifier used to show file size produces segmentation fault
on some platforms. PRIuMAX macro cannot be used within i18b'd strings.
Solution: use %llu modifier with typecasting to unsigned long long.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

src/filemanager/filegui.c

@@ -308,10 +308,10 @@ overwrite_query_dialog (FileOpContext * ctx, enum OperationMode mode)
         { N_("Target file already exists!"), 3, 4, 0 },
         /*  1 */
         { "%s", 4, 4, 0 },
-        /*  2 */
-        { N_("Source date: %s, size %ju"), 6, 4, 0 },
-        /*  3 */
-        { N_("Target date: %s, size %ju"), 7, 4, 0 },
+        /*  2 */ /* cannot use PRIuMAX here; %llu is used instead */
+        { N_("Source date: %s, size %llu"), 6, 4, 0 },
+        /*  3 */  /* cannot use PRIuMAX here; %llu is used instead */
+        { N_("Target date: %s, size %llu"), 7, 4, 0 },
         /*  4 */
         { N_("&Abort"), 14, 25, REPLACE_ABORT },
         /*  5 */
@@ -429,9 +429,9 @@ overwrite_query_dialog (FileOpContext * ctx, enum OperationMode mode)
                 label_new (rd_widgets[1].ypos, (rd_xlen - stripped_name_len) / 2, stripped_name));
 
     /* source date and size */
-    ADD_RD_LABEL (2, file_date (ui->s_stat->st_mtime), (uintmax_t) ui->s_stat->st_size);
+    ADD_RD_LABEL (2, file_date (ui->s_stat->st_mtime), (unsigned long long) ui->s_stat->st_size);
     /* destination date and size */
-    ADD_RD_LABEL (3, file_date (ui->d_stat->st_mtime), (uintmax_t) ui->d_stat->st_size);
+    ADD_RD_LABEL (3, file_date (ui->d_stat->st_mtime), (unsigned long long) ui->d_stat->st_size);
 
     ADD_RD_BUTTON (4);          /* Abort */
     ADD_RD_BUTTON (5);          /* If size differs */