pld/virtex2: check error propagated by virtex2_read_stat()
Commit
dd9137dc0e0c ("pld/virtex2: add missing error checks") adds
checks on the return value of several functions, allowing also
virtex2_read_stat() to propagate such returned values.
This triggers an error with clang, as it is now able to identify a
possible execution path that makes uninitialized the variable
status.
Check for the returned value of virtex2_read_stat() before using
the variable status and propagate the returned value.
While there, drop a useless empty string.
Change-Id: I7a23d3f904d4e07cdb6f6dfdf1179889b6b8afb8
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7657
Reviewed-by: Daniel Anselmi <danselmi@gmx.ch>
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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