[PATCH] common: constify some declarations

[Frediano Ziglio <fziglio@xxxxxxxxxx>]

Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
 common/log.c        | 4 ++--
 common/marshaller.c | 7 +++++--
 common/marshaller.h | 2 +-
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/common/log.c b/common/log.c
index fc5c129..c61156b 100644
--- a/common/log.c
+++ b/common/log.c
@@ -36,14 +36,14 @@ static const char * spice_log_level_to_string(SpiceLogLevel level)
 {
 #ifdef _MSC_VER
     /* MSVC++ does not implement C99 */
-    static const char *to_string[] = {
+    static const char *const to_string[] = {
          "ERROR",
          "CRITICAL",
          "Warning",
          "Info",
          "Debug"};
 #else
-    static const char *to_string[] = {
+    static const char *const to_string[] = {
         [ SPICE_LOG_LEVEL_ERROR ] = "ERROR",
         [ SPICE_LOG_LEVEL_CRITICAL ] = "CRITICAL",
         [ SPICE_LOG_LEVEL_WARNING ] = "Warning",
diff --git a/common/marshaller.c b/common/marshaller.c
index 55b9d51..0e6e972 100644
--- a/common/marshaller.c
+++ b/common/marshaller.c
@@ -342,9 +342,12 @@ uint8_t *spice_marshaller_add(SpiceMarshaller *m, const uint8_t *data, size_t si
     return ptr;
 }
 
-uint8_t *spice_marshaller_add_ref(SpiceMarshaller *m, uint8_t *data, size_t size)
+uint8_t *spice_marshaller_add_ref(SpiceMarshaller *m, const uint8_t *data, size_t size)
 {
-    return spice_marshaller_add_ref_full(m, data, size, NULL, NULL);
+    /* the cast to no-const here is safe as data is used for writing only if
+     * free_data pointer is not NULL
+     */
+    return spice_marshaller_add_ref_full(m, (uint8_t *) data, size, NULL, NULL);
 }
 
 void spice_marshaller_add_ref_chunks(SpiceMarshaller *m, SpiceChunks *chunks)
diff --git a/common/marshaller.h b/common/marshaller.h
index e19c0f6..a0dd72a 100644
--- a/common/marshaller.h
+++ b/common/marshaller.h
@@ -37,7 +37,7 @@ void spice_marshaller_destroy(SpiceMarshaller *m);
 uint8_t *spice_marshaller_reserve_space(SpiceMarshaller *m, size_t size);
 void spice_marshaller_unreserve_space(SpiceMarshaller *m, size_t size);
 uint8_t *spice_marshaller_add(SpiceMarshaller *m, const uint8_t *data, size_t size);
-uint8_t *spice_marshaller_add_ref(SpiceMarshaller *m, uint8_t *data, size_t size);
+uint8_t *spice_marshaller_add_ref(SpiceMarshaller *m, const uint8_t *data, size_t size);
 uint8_t *spice_marshaller_add_ref_full(SpiceMarshaller *m, uint8_t *data, size_t size,
                                        spice_marshaller_item_free_func free_data, void *opaque);
 void     spice_marshaller_add_ref_chunks(SpiceMarshaller *m, SpiceChunks *chunks);
-- 
2.4.3

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