libbb: introduce and use xrealloc_vector

function                                             old     new   delta
xrealloc_vector_helper                                 -      51     +51
create_list                                           84      99     +15
getopt_main                                          690     695      +5
passwd_main                                         1049    1053      +4
get_cached                                            85      89      +4
msh_main                                            1377    1380      +3
add_match                                             42      41      -1
read_lines                                           720     718      -2
grave                                               1068    1066      -2
fill_match_lines                                     143     141      -2
add_to_dirlist                                        67      65      -2
add_input_file                                        49      47      -2
act                                                  252     250      -2
fsck_main                                           2252    2246      -6
man_main                                             765     757      -8
bb_internal_initgroups                               228     220      -8
cut_main                                            1052    1041     -11
add_edge_to_node                                      55      43     -12
dpkg_main                                           3851    3835     -16
ifupdown_main                                       2202    2178     -24
sort_main                                            838     812     -26
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/15 up/down: 82/-124)          Total: -42 bytes

1 files changed, 2 insertions, 2 deletions

diff --git a/archival/rpm.c b/archival/rpm.c
index c4bcd605d..b3d7cd5f7 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -279,12 +279,12 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
                         tmpindex->type = ntohl(tmpindex->type);
                         tmpindex->count = ntohl(tmpindex->count);
                         tmpindex->offset = storepos + ntohl(tmpindex->offset);
-                        if (pass==0)
+                        if (pass == 0)
                                 tmpindex->tag -= 743;
                 }
                 xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
                 /* Skip padding to 8 byte boundary after reading signature headers */
-                if (pass==0)
+                if (pass == 0)
                         xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
         }
         tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */