iorap: fix a use of an uninitialized value

We shouldn't be printing the parsed value here if parsing fails.

Caught by the static analyzer:
> system/iorap/src/compiler/main.cc:150:9: warning: 1st function call
argument is an uninitialized value [clang-analyzer-core.CallAndMessage]

Bug: None
Test: TreeHugger
Change-Id: Idba773bc0a3e9276dede4bcfb4293153a03181e5
1 file changed