[PATCH] Trivial warning fixes

[Alan Jenkins]

Build showed some warnings.
The following warnings were trivial to remove.

ply-logger.c: In function ‘ply_logger_open_file’:
ply-logger.c:316:16: warning: unused variable ‘mode’ [-Wunused-variable]
         mode_t mode;
                ^~~~

main.c: In function ‘plymouth_should_show_default_splash’:
main.c:905:20: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]
         const char const *strings[] = {
                    ^~~~~
./plugin.c:395:19: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]
 static const char const *get_visual_name (int visual)
                   ^~~~~
./plugin.c: In function ‘get_visual_name’:
./plugin.c:397:27: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier]
         static const char const *visuals[] =
                           ^~~~~
---
 src/libply/ply-logger.c                     | 1 -
 src/main.c                                  | 2 +-
 src/plugins/renderers/frame-buffer/plugin.c | 4 ++--
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/libply/ply-logger.c b/src/libply/ply-logger.c
index 1b56ea8..e9b90de 100644
--- a/src/libply/ply-logger.c
+++ b/src/libply/ply-logger.c
@@ -313,7 +313,6 @@ ply_logger_open_file (ply_logger_t *logger,
                       const char   *filename)
 {
         int fd;
-        mode_t mode;
 
         assert (logger != NULL);
         assert (filename != NULL);
diff --git a/src/main.c b/src/main.c
index 08c7fe1..ba6546c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -902,7 +902,7 @@ plymouth_should_show_default_splash (state_t *state)
 {
         ply_trace ("checking if plymouth should show default splash");
 
-        const char const *strings[] = {
+        const char *const strings[] = {
                 "single", "1", "s", "S", "-S", NULL
         };
         int i;
diff --git a/src/plugins/renderers/frame-buffer/plugin.c b/src/plugins/renderers/frame-buffer/plugin.c
index 41ad6cd..9c863d4 100644
--- a/src/plugins/renderers/frame-buffer/plugin.c
+++ b/src/plugins/renderers/frame-buffer/plugin.c
@@ -392,9 +392,9 @@ close_device (ply_renderer_backend_t *backend)
         backend->head.area.height = 0;
 }
 
-static const char const *get_visual_name (int visual)
+static const char *get_visual_name (int visual)
 {
-        static const char const *visuals[] =
+        static const char *const visuals[] =
         {
                 [FB_VISUAL_MONO01] = "FB_VISUAL_MONO01",
                 [FB_VISUAL_MONO10] = "FB_VISUAL_MONO10",
-- 
2.14.3