Fix formatting inconsistency

Author: tom-kuchler

c_functions/compression/compression.c

@@ -28,8 +28,8 @@ void *realloc_sized(void *old, size_t old_size, size_t new_size) {
 
 #define STBI_WRITE_NO_STDIO
 #define STBIW_ASSERT(x)                                                        \
-  {                                                                            \
-  }
+  do {                                                                         \
+  } while (0)
 #define STBIW_MALLOC(size) dandelion_alloc(size, 8)
 #define STBIW_FREE(ptr) dandelion_free(ptr)
 #define STBIW_REALLOC_SIZED(ptr, old_size, new_size)                           \