ext_external_objects: Remove unsigned comparison against 0.

prop_count is of type uint32_t.

Fix defect reported by Coverity Scan.

Unsigned compared against 0 (NO_EFFECT) unsigned_compare: This less-than-zero comparison of an unsigned value is never true. prop_count < 0U.

Fixes: a0722042 ("ext_external_objects: Selecting a queue that supports graphics") Signed-off-by: Vinson Lee vlee@freedesktop.org