etnaviv: isa: Print parser error

When a parsing test fails, output the actual error message to aid
debugging. This makes it immediately clear why parsing failed instead
of just showing that the test didn't succeed.

Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: @LingMan
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39016>

src/etnaviv/isa/tests/disasm.cpp

@@ -74,7 +74,7 @@ TEST_P(DisasmTest, basicOpCodes)
    if (as.flags & FLAG_FAILING_PARSE)
       EXPECT_FALSE(result->success);
    else
-      EXPECT_TRUE(result->success);
+      EXPECT_TRUE(result->success) << "Parser error: " << result->error;
 
    if (result->success && !(as.flags & FLAG_FAILING_ASM)) {
       uint32_t encoded[4] = {0};