Added explicit int type to some function to avoid compile issue: error type defaults to int

[driquelme]

Fixes compile error on MacOS due to use of default function parameter types.

For example:

gcc -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DYYDEBUG  -DMACOS -g -Wall -fcommon   -c -o tdefs.o tdefs.c
tdefs.c: In function 'getSimpleTdefsByNumber':
tdefs.c:150:1: error: type of 'nTable' defaults to 'int' [-Wimplicit-int]
  150 | getSimpleTdefsByNumber(nTable)
      | ^~~~~~~~~~~~~~~~~~~~~~
make: *** [tdefs.o] Error 1

MacOS Version Sequoia 15.6