lib/unictype/bitmap.h: wrong casting of "table..."

[Bjarni Ingi Gislason]

  CC       lib/unictype/libgnu_a-ctype_alnum.o
In file included from ../lib/unictype/ctype_alnum.c:23:
../lib/unictype/bitmap.h: In function 'bitmap_lookup':
../lib/unictype/bitmap.h:31:14: warning: comparison of integer expressions of 
different signedness: 'unsigned int' and 'int' [-Wsign-compare]
   31 |   if (index1 < ((const int *) table)[0])
      |              ^

See

static inline int
bitmap_lookup (const void *table, ucs4_t uc)
{
  unsigned int index1 = uc >> header_0;
  if (index1 < ((const int *) table)[0])
...
              unsigned int lookup3 = ((const unsigned int *) table)[lookup2 + 
index3];