[gnome-panel] run-dialog: fix -Wsign-compare warnings

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 715ffaae55f188b2ca140d12eae7427ff13065e8
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 8 00:45:44 2020 +0200

    run-dialog: fix -Wsign-compare warnings

 gnome-panel/panel-run-dialog.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/gnome-panel/panel-run-dialog.c b/gnome-panel/panel-run-dialog.c
index d645d1f17..86cfb6165 100644
--- a/gnome-panel/panel-run-dialog.c
+++ b/gnome-panel/panel-run-dialog.c
@@ -1527,6 +1527,7 @@ entry_event (GtkEditable    *entry,
        char             *nprefix;
        char             *temp;
        int               pos, tmp;
+       int               text_len;
 
        if (event->type != GDK_KEY_PRESS)
                return FALSE;
@@ -1540,6 +1541,8 @@ entry_event (GtkEditable    *entry,
                                     PANEL_RUN_ENABLE_COMPLETION_KEY))
                return FALSE;
 
+       text_len = strlen (gtk_entry_get_text (GTK_ENTRY (entry)));
+
        /* tab completion */
        if (event->keyval == GDK_KEY_Tab) {
                gtk_editable_get_selection_bounds (entry, &pos, &tmp);
@@ -1547,7 +1550,7 @@ entry_event (GtkEditable    *entry,
                if (dialog->completion_started &&
                    pos != tmp &&
                    pos != 1 &&
-                   tmp == strlen (gtk_entry_get_text (GTK_ENTRY (entry)))) {
+                   tmp == text_len) {
                        gtk_editable_select_region (entry, 0, 0);               
                        gtk_editable_set_position (entry, -1);
                        
@@ -1560,12 +1563,12 @@ entry_event (GtkEditable    *entry,
                if (dialog->completion_started &&
                    pos != tmp &&
                    pos != 0 &&
-                   tmp == strlen (gtk_entry_get_text (GTK_ENTRY (entry)))) {
+                   tmp == text_len) {
                        temp = gtk_editable_get_chars (entry, 0, pos);
                        prefix = g_strconcat (temp, event->string, NULL);
                        g_free (temp);
                } else if (pos == tmp &&
-                          tmp == strlen (gtk_entry_get_text (GTK_ENTRY (entry)))) {
+                          tmp == text_len) {
                        prefix = g_strconcat (gtk_entry_get_text (GTK_ENTRY (entry)),
                                              event->string, NULL);
                } else {