Some architectures need "signed char" declarations

I recently got a Debian bug report about 3 architectures where char is
unsigned by default.  There were 2 locations identified in the code
where a char is compared with a negative value, and should therefore be
declared as a "signed char".  There may be others in 7.2, but I don't
myself have access to a suitable machine for testing.

The locations I am aware of are:
src/backend/libpq/hba.c    GetCharSetByHost(): if (c == EOF)src/backend/utils/init/miscinit.c  SetCharSet(): if (c ==
EOF)

The architectures are Linux on: arm, powerpc and s390.

--
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839  932A 614D 4C34 3E1D 0C1C
    "And not only so, but we glory in tribulations also;      knowing that tribulation worketh patience; And
patience,experience; and experience, hope; And hope      maketh not ashamed; because the love of God is shed
abroadin our hearts by the Holy Ghost which is given      unto us."              Romans 5:3-5