patch 8.1.0079: superfluous space in messages

Problem:    Superfluous space in messages.
Solution:   Remove the spaces. (closes #3030)
diff --git a/src/gui_w32.c b/src/gui_w32.c
index 350b6fc..49aa1e0 100644
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -2821,7 +2821,7 @@
 	}
 
 	set_window_title(s_findrep_hwnd,
-			       _("Find string (use '\\\\' to find  a '\\')"));
+			       _("Find string (use '\\\\' to find a '\\')"));
 	(void)SetFocus(s_findrep_hwnd);
 
 	s_findrep_is_find = TRUE;
@@ -2856,7 +2856,7 @@
 	}
 
 	set_window_title(s_findrep_hwnd,
-			    _("Find & Replace (use '\\\\' to find  a '\\')"));
+			    _("Find & Replace (use '\\\\' to find a '\\')"));
 	(void)SetFocus(s_findrep_hwnd);
 
 	s_findrep_is_find = FALSE;