Fix bug in cppcharset on 64-bit platforms

[Neil Booth]

Andreas Jaeger wrote:-

> 
> I just got on x86-64 this error while bootstrapping mainline:
> 
> /usr/src/aj/cvs/gcc/gcc/cppcharset.c: In function `_cpp_valid_ucn':
> /usr/src/aj/cvs/gcc/gcc/cppcharset.c:95: warning: field precision is not type int (arg 4)
> /usr/src/aj/cvs/gcc/gcc/cppcharset.c:104: warning: field precision is not type int (arg 4)
> /usr/src/aj/cvs/gcc/gcc/cppcharset.c:113: warning: field precision is not type int (arg 4)
> /usr/src/aj/cvs/gcc/gcc/cppcharset.c:117: warning: field precision is not type int (arg 4)
> make[2]: *** [cppcharset.o] Error 1
> 
> I'm testing the appended patch now and will commit it as obvious after
> bootstrapping,

Thanks Andreas.

Neil.