[cc/tidy] Disable cert-err33-c

Bug: http://b/216364337

This check warns when return values of standard-library functions
(including fprintf, snprintf) are not checked. Some of these warnings
turn to error when tidy_checks_as_errors in Android.bp.

Disable this for now and follow-up after compiler update to disable or
fix individual instances.

Test: Build with new compiler
Change-Id: I5af89b3f9cea4961c69708c51d22c510d478405b

cc/tidy.go

@@ -156,6 +156,9 @@ func (tidy *tidyFeature) flags(ctx ModuleContext, flags Flags) Flags {
 	// Too many existing functions trigger this rule, and fixing it requires large code
 	// refactoring. The cost of maintaining this tidy rule outweighs the benefit it brings.
 	tidyChecks = tidyChecks + ",-bugprone-easily-swappable-parameters"
+	// http://b/216364337 - TODO: Follow-up after compiler update to
+	// disable or fix individual instances.
+	tidyChecks = tidyChecks + ",-cert-err33-c"
 	flags.TidyFlags = append(flags.TidyFlags, tidyChecks)
 
 	if ctx.Config().IsEnvTrue("WITH_TIDY") {