wimlib_create_{de,}compressor(): Check ctype first

[wimlib] / src / decompress.c

diff --git a/src/decompress.c b/src/decompress.c
index 4ebd940d0ac074ce7d8e52ca122b84b09c9ce159..b8ed8dfcfe03186b33a119c4069e31d2709f5bca 100644 (file)
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -59,15 +59,15 @@ wimlib_create_decompressor(enum wimlib_compression_type ctype,
 {
        struct wimlib_decompressor *dec;
 
+       if (!decompressor_ctype_valid(ctype))
+               return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
+
        if (dec_ret == NULL)
                return WIMLIB_ERR_INVALID_PARAM;
 
        if (max_block_size == 0)
                return WIMLIB_ERR_INVALID_PARAM;
 
-       if (!decompressor_ctype_valid(ctype))
-               return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
-
        dec = MALLOC(sizeof(*dec));
        if (dec == NULL)
                return WIMLIB_ERR_NOMEM;