[patch fortran]: Address some more warning

[Kai Tietz]

Hi,

the following patch addresses some warnings, which can be seen on
bootstrap (stage 1) by using gcc 3.4.4

ChangeLog /gcc/fortran

2010-06-09  Kai Tietz

	* error.c (error_print): Pre-initialize loc by NULL.
	* openmp.c (resolve_omp_clauses): Add explicit
	braces to avoid ambigous else.
	* array.c (match_subscript): Pre-initialize m to MATCH_ERROR.


Tested for i686-pc-cygwin, x86_64-pc-linux-gnu, and x86_64-pc-mingw32.
Ok for apply?

Regards,
Kai

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