[gimp] app: #include <string.h> in tool_manager.c

[N/A <ell src gnome org>]

commit 187f2b4453751b33677e7be02eb3a5cd0b84cf60
Author: Ell <ell_se yahoo com>
Date:   Thu Apr 19 14:52:02 2018 -0400

    app: #include <string.h> in tool_manager.c
    
    For strcmp() and strlen().

 app/tools/tool_manager.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/app/tools/tool_manager.c b/app/tools/tool_manager.c
index 3bd698b..6822c1e 100644
--- a/app/tools/tool_manager.c
+++ b/app/tools/tool_manager.c
@@ -17,6 +17,8 @@
 
 #include "config.h"
 
+#include <string.h>
+
 #include <gegl.h>
 #include <gtk/gtk.h>