One issue caught by Coverity 344984
*overrun-local: Overrunning array cperf_test_type_strs of 2 8-byte elements
The array cperf_test_type_strs defined in app/test-compress-perf conflicts
with the same name being defined in app/test-crypto-perf. Due to which
coverity reports error.
The fix is to rename "cperf_test_type_strs" into "comp_perf_test_type_strs"
in app/test-compress-perf to avoid name confusion.