buffer: Reformat buffer_shift()

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

src/buffer.c

@@ -182,13 +182,18 @@ static int realloc_buffer(struct ssh_buffer_struct *buffer, size_t needed) {
  * @brief shifts a buffer to remove unused data in the beginning
  * @param buffer SSH buffer
  */
-static void buffer_shift(ssh_buffer buffer){
+static void buffer_shift(ssh_buffer buffer)
+{
     uint32_t burn_pos = buffer->pos;
 
     buffer_verify(buffer);
-  if(buffer->pos==0)
+
+    if (buffer->pos == 0) {
         return;
-  memmove(buffer->data, buffer->data + buffer->pos, buffer->used - buffer->pos);
+    }
+    memmove(buffer->data,
+            buffer->data + buffer->pos,
+            buffer->used - buffer->pos);
     buffer->used -= buffer->pos;
     buffer->pos = 0;