(flac_pictures): Fix compile warnings about description signedness.

diff --git a/flac.c b/flac.c
index f539d11..ed507ac 100644 (file)
--- a/flac.c
+++ b/flac.c
@@ -53,9 +53,10 @@ flac_pictures(char *fn)
             continue;
         }
 
-        description = PyUnicode_DecodeUTF8(block->data.picture.description,
-                                       strlen(block->data.picture.description),
-                                           "strict");
+        description = PyUnicode_DecodeUTF8(
+            (const char *)block->data.picture.description,
+            strlen((const char *)block->data.picture.description),
+            "strict");
         if (description == NULL) {
             return NULL;
         }