gcc.c: duplicate (and different) declarations of fatal

[Jim Meyering]

This is from the latest CVS sources.
I ran cvs update a couple hours ago and found this by inspection.
If it doesn't already do so, gcc should warn about such conflicting
declarations.

  $ grep -A1 'fatal.*PV' gcc.c
  static void fatal		PVPROTO((char *, ...)) ATTRIBUTE_NORETURN;
  static void error		PVPROTO((char *, ...));
  static void fatal		PVPROTO((char *, ...))
    ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF_1;