Make most function parameters const

More const never hurts in general, but in particular this allows the compiler
to make better nullability deductions, which reduces the amount of manual
nullability casting required.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/base64.c b/src/base64.c
index 4a9b4dac..8569577b 100644
--- a/src/base64.c
+++ b/src/base64.c
@@ -49,7 +49,7 @@ static const char b64_unmap[] =
 
 /** Encode 3 raw bytes to 4 base64 characters. */
 static void
-encode_chunk(uint8_t out[4], const uint8_t in[3], size_t n_in)
+encode_chunk(uint8_t out[4], const uint8_t in[3], const size_t n_in)
 {
   out[0] = b64_map[in[0] >> 2];
   out[1] = b64_map[((in[0] & 0x03) << 4) | ((in[1] & 0xF0) >> 4)];
@@ -107,7 +107,9 @@ decode_chunk(const uint8_t in[4], uint8_t out[3])
 }
 
 void*
-serd_base64_decode(const uint8_t* str, size_t len, size_t* size)
+serd_base64_decode(const uint8_t* const str,
+                   const size_t         len,
+                   size_t* const        size)
 {
   void* buf = malloc((len * 3) / 4 + 2);