open_transformer: do not return fd, it does not change

libbb: adopt zipped read from modprobe-small

function                                             old     new   delta
getoptscmd                                           708     713      +5
qgravechar                                           106     109      +3
huft_build                                          1165    1168      +3
tr_main                                              474     472      -2
open_transformer                                      91      89      -2
evalvar                                             1376    1374      -2
rpm_main                                            1691    1688      -3
qrealloc                                              36      33      -3
get_header_tar_lzma                                   55      52      -3
get_header_tar_gz                                    100      97      -3
get_header_tar_bz2                                    55      52      -3
get_header_tar_Z                                      89      86      -3
find_main                                            418     406     -12
prepare                                              302     283     -19
xmalloc_open_zipped_read_close                       161     135     -26
xmalloc_read                                         248     199     -49
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/13 up/down: 11/-130)         Total: -119 bytes

1 files changed, 0 insertions, 28 deletions

diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index f28c425..517c103 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -143,34 +143,6 @@ static char* str_2_list(const char *str)
 }
 
 #if ENABLE_FEATURE_MODPROBE_SMALL_ZIPPED
-static char *xmalloc_open_zipped_read_close(const char *fname, size_t *sizep)
-{
-	size_t len;
-	char *image;
-	char *suffix;
-
-	int fd = open_or_warn(fname, O_RDONLY);
-	if (fd < 0)
-		return NULL;
-
-	suffix = strrchr(fname, '.');
-	if (suffix) {
-		if (strcmp(suffix, ".gz") == 0)
-			fd = open_transformer(fd, unpack_gz_stream, "gunzip");
-		else if (strcmp(suffix, ".bz2") == 0)
-			fd = open_transformer(fd, unpack_bz2_stream, "bunzip2");
-	}
-
-	len = (sizep) ? *sizep : 64 * 1024 * 1024;
-	image = xmalloc_read(fd, &len);
-	if (!image)
-		bb_perror_msg("read error from '%s'", fname);
-	close(fd);
-
-	if (sizep)
-		*sizep = len;
-	return image;
-}
 # define read_module xmalloc_open_zipped_read_close
 #else
 # define read_module xmalloc_open_read_close