Revert "Fix KeyInfo's syms array size calculation"

Revert "Fix KeyInfo's syms array size calculation"

This partly reverts commit 8feba630fa7a4b720c42a9b5b4e4280b0e17a500.

This seems to fix valgrind errors:
==9581== Invalid read of size 4
==9581==    at 0x4E50928: MergeKeyGroups (symbols.c:544)
==9581==    by 0x4E510F3: MergeKeys (symbols.c:644)
==9581==    by 0x4E514C6: AddKeySymbols (symbols.c:722)
==9581==    by 0x4E51A3F: MergeIncludedSymbols (symbols.c:854)
==9581==    by 0x4E51E97: HandleIncludeSymbols (symbols.c:952)
==9581==    by 0x4E53D75: HandleSymbolsFile (symbols.c:1619)
==9581==    by 0x4E55A0B: CompileSymbols (symbols.c:2187)
==9581==    by 0x4E4056C: CompileKeymap (keymap.c:160)
==9581==    by 0x4E56953: compile_keymap (xkbcomp.c:149)
==9581==    by 0x4E56AC5: xkb_map_new_from_kccgst (xkbcomp.c:195)
==9581==    by 0x4009D7: test_names (namescomp.c:56)
==9581==    by 0x400A55: main (namescomp.c:75)
==9581==  Address 0x5729b04 is 0 bytes after a block of size 4 alloc'd
==9581==    at 0x4C29024: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==9581==    by 0x4E5C37B: recalloc (utils.c:41)
==9581==    by 0x4E4FF50: ResizeKeyGroup (symbols.c:356)
==9581==    by 0x4E5229E: AddSymbolsToKey (symbols.c:1058)
==9581==    by 0x4E52ABB: SetSymbolsField (symbols.c:1214)
==9581==    by 0x4E536C7: HandleSymbolsBody (symbols.c:1481)
==9581==    by 0x4E53A63: HandleSymbolsDef (symbols.c:1543)
==9581==    by 0x4E53DAD: HandleSymbolsFile (symbols.c:1623)
==9581==    by 0x4E51CA4: HandleIncludeSymbols (symbols.c:909)
==9581==    by 0x4E53D75: HandleSymbolsFile (symbols.c:1619)
==9581==    by 0x4E51E74: HandleIncludeSymbols (symbols.c:951)
==9581==    by 0x4E53D75: HandleSymbolsFile (symbols.c:1619)

Signed-off-by: Ran Benita <ran234@gmail.com>