Properly use SCHAR_MAX instead of CHAR_MAX for 0x7f. This fixes operation of locate(1) on systems on which char is unsigned by default (ARM and PowerPC).
Properly use SCHAR_MAX instead of CHAR_MAX for 0x7f. This fixes operation
of locate(1) on systems on which char is unsigned by default (ARM and
PowerPC).

Reported by:	Paul Mather
MFC after:	4 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase