[gegl] gcut: obey some warnings exposed by clang

[Øyvind Kolås <ok src gnome org>]

commit ceb17003e932cb8264930d6bc1febbb53b2805b4
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Sep 30 01:41:00 2017 +0200

    gcut: obey some warnings exposed by clang

 gcut/gcut-ui.c      |    6 +++---
 gcut/iconographer.c |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gcut/gcut-ui.c b/gcut/gcut-ui.c
index a6254dd..4d5cb6f 100644
--- a/gcut/gcut-ui.c
+++ b/gcut/gcut-ui.c
@@ -1859,7 +1859,7 @@ static void update_double_string (const char *new_string, void *user_data)
     path_item.point[0].y = val;
     gegl_path_insert_node (path, -1, &path_item);
 done:
-    if(0);
+    if(0) {};
 
   }
   else
@@ -2479,7 +2479,7 @@ static float print_nodes (Mrg *mrg, GeglEDL *edl, GeglNode *node, float x, float
           y -= mrg_em (mrg) * 1.15;
         }
 
-        if ((node == selected_node))
+        if (node == selected_node)
         {
           print_props (mrg, edl, node, mrg_em(mrg) * 1.0, mrg_em(mrg) * 1.8);
         }
@@ -2490,7 +2490,7 @@ static float print_nodes (Mrg *mrg, GeglEDL *edl, GeglNode *node, float x, float
         mrg_listen (mrg, MRG_CLICK, select_node, node, NULL);
 
         cairo_set_source_rgb (mrg_cr (mrg), 1,1,1);
-        if ((node == selected_node))
+        if (node == selected_node)
           cairo_set_line_width (mrg_cr (mrg), 3.0);
         else
           cairo_set_line_width (mrg_cr (mrg), 1.0);
diff --git a/gcut/iconographer.c b/gcut/iconographer.c
index 9e73f30..25d77cf 100644
--- a/gcut/iconographer.c
+++ b/gcut/iconographer.c
@@ -570,7 +570,7 @@ main (gint    argc,
       gint max_buf_pos = 0;
       for (frame = frame_start; frame <= frame_end; frame++)
         {
-          FrameInfo info = {0};
+          FrameInfo info = {{0}};
           uint8_t buffer[4096] = {0,};
           int buffer_pos = 0;
           GeglRectangle terrain_row;