Fixed -1 minimap index when smooth scrolling is enabled

scene/gui/text_edit.cpp

@@ -935,7 +935,7 @@ void TextEdit::_notification(int p_what) {
 				int minimap_line = (v_scroll->get_max() <= minimap_visible_lines) ? -1 : first_visible_line;
 				if (minimap_line >= 0) {
 					minimap_line -= num_lines_from_rows(first_visible_line, 0, -num_lines_before, wi);
-					minimap_line -= (smooth_scroll_enabled ? 1 : 0);
+					minimap_line -= (minimap_line > 0 && smooth_scroll_enabled ? 1 : 0);
 				}
 				int minimap_draw_amount = minimap_visible_lines + times_line_wraps(minimap_line + 1);
 
@@ -2146,7 +2146,7 @@ void TextEdit::_get_minimap_mouse_row(const Point2i &p_mouse, int &r_row) const
 	int minimap_line = (v_scroll->get_max() <= minimap_visible_lines) ? -1 : first_visible_line;
 	if (first_visible_line > 0 && minimap_line >= 0) {
 		minimap_line -= num_lines_from_rows(first_visible_line, 0, -num_lines_before, wi);
-		minimap_line -= (smooth_scroll_enabled ? 1 : 0);
+		minimap_line -= (minimap_line > 0 && smooth_scroll_enabled ? 1 : 0);
 	} else {
 		minimap_line = 0;
 	}