[PATCH] Fix access to uninitialized variable in fill_in_stop_func

[Tom Tromey]

>>>>> "Pedro" == Pedro Franco de Carvalho <pedromfc@linux.ibm.com> writes:

Pedro> This patch changes fill_in_stop_func to check the return value of
Pedro> find_pc_partial_function before accessing the block pointer that is only
Pedro> written by find_pc_partial_function if it returns a success status.

Pedro> gdb/ChangeLog:
Pedro> YYYY-MM-DD  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

Pedro> 	* infrun.c (fill_in_stop_func): Use return value of
Pedro> 	find_pc_partial_function, remove comment.

The comment for find_pc_partial_function says:

   nullptr is used as a return value for *BLOCK if no block is found. 

... which implies to me that the function was intended to set *BLOCK
unconditionally.  Perhaps Kevin could say, as I think he added the block
parameter.

Tom