[patch, fortran] Fix for PR 47676

[Thomas Koenig]

Am 05.01.2015 um 19:55 schrieb H.J. Lu:

> On Linux/x86, I got
> 
> ../../src-trunk/gcc/fortran/frontend-passes.c: In function ‘int
> realloc_string_callback(gfc_code**, int*, void*)’:
> ../../src-trunk/gcc/fortran/frontend-passes.c:152:38: error:
> ‘gfc_discard_nops’ was not declared in this scope
>    expr2 = gfc_discard_nops (co->expr2);
>                                       ^
> make[6]: *** [fortran/frontend-passes.o] Error 1

Fixed, sorry for the breakage.

	Thomas