new valgrind errors

[Felix Rosencrantz <f_rosencrantz@xxxxxxxxx>]

Here is condensed output based on the latest changes.  -FR.
 ERROR SUMMARY: 1537 errors from 12 contexts (suppressed: 24 from 1)
 
 11 errors in context 1 of 12:
 Invalid read of size 4
    at 0x80A49C3: pattryrefs (pattern.c:1357)
    by 0x80A4952: pattry (pattern.c:1331)
    by 0x413B1E39: lookupstyle (zutil.c:247)
    by 0x413B27C4: bin_zstyle (zutil.c:439)
    Address 0x4105951C is 20 bytes inside a block of size 80 free'd
    at 0x40040311: free (vg_clientfuncs.c:156)
    by 0x808C737: zfree (mem.c:1391)
    by 0x80A7229: freepatprog (pattern.c:2326)
    by 0x413B1912: setstypat (zutil.c:135)
 
 11 errors in context 3 of 12:
 Invalid read of size 4
    at 0x80A49A5: pattryrefs (pattern.c:1356)
    by 0x80A4952: pattry (pattern.c:1331)
    by 0x413B1E39: lookupstyle (zutil.c:247)
    by 0x413B27C4: bin_zstyle (zutil.c:439)
    Address 0x4105951C is 20 bytes inside a block of size 80 free'd
    at 0x40040311: free (vg_clientfuncs.c:156)
    by 0x808C737: zfree (mem.c:1391)
    by 0x80A7229: freepatprog (pattern.c:2326)
    by 0x413B1912: setstypat (zutil.c:135)
 
 11 errors in context 4 of 12:
 Invalid read of size 4
    at 0x80A4969: pattryrefs (pattern.c:1344)
    by 0x80A4952: pattry (pattern.c:1331)
    by 0x413B1E39: lookupstyle (zutil.c:247)
    by 0x413B27C4: bin_zstyle (zutil.c:439)
    Address 0x41059508 is 0 bytes inside a block of size 80 free'd
    at 0x40040311: free (vg_clientfuncs.c:156)
    by 0x808C737: zfree (mem.c:1391)
    by 0x80A7229: freepatprog (pattern.c:2326)
    by 0x413B1912: setstypat (zutil.c:135)
 
 253 errors in context 9 of 12:
 Invalid read of size 1
    at 0x4004097C: strcmp (vg_clientfuncs.c:405)
    by 0x80A4A02: pattryrefs (pattern.c:1357)
    by 0x80A4952: pattry (pattern.c:1331)
    by 0x413B1E39: lookupstyle (zutil.c:247)
    Address 0x4105952C is 36 bytes inside a block of size 80 free'd
    at 0x40040311: free (vg_clientfuncs.c:156)
    by 0x808C737: zfree (mem.c:1391)
    by 0x80A7229: freepatprog (pattern.c:2326)
    by 0x413B1912: setstypat (zutil.c:135)
 
 264 errors in context 10 of 12:
 Invalid read of size 1
    at 0x4004096F: strcmp (vg_clientfuncs.c:404)
    by 0x80A4A02: pattryrefs (pattern.c:1357)
    by 0x80A4952: pattry (pattern.c:1331)
    by 0x413B1E39: lookupstyle (zutil.c:247)
    Address 0x4105952C is 36 bytes inside a block of size 80 free'd
    at 0x40040311: free (vg_clientfuncs.c:156)
    by 0x808C737: zfree (mem.c:1391)
    by 0x80A7229: freepatprog (pattern.c:2326)
    by 0x413B1912: setstypat (zutil.c:135)
 
 IN SUMMARY: 1537 errors from 12 contexts (suppressed: 24 from 1)
 
 malloc/free: in use at exit: 413418 bytes in 12144 blocks.
 malloc/free: 30481 allocs, 18337 frees, 2852021 bytes allocated.
 
 searching for pointers to 12144 not-freed blocks.
 checked 6280660 bytes.
 
 definitely lost: 2680 bytes in 57 blocks.
 possibly lost:   0 bytes in 0 blocks.
 still reachable: 410738 bytes in 12087 blocks.
 
 80 bytes in 1 blocks are definitely lost in loss record 8 of 27
    at 0x4004009E: malloc (vg_clientfuncs.c:96)
    by 0x808C15E: zalloc (mem.c:490)
    by 0x80A2C58: patcompile (pattern.c:436)
    by 0x413B1FE1: bin_zstyle (zutil.c:293)



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