Fix behavior in case EmitLoggingArraySampleRate=1

Summary: The modulo test below fails when we set the sample rate = 1. Fix it.

Differential Revision: D30542973

fbshipit-source-id: 23c8fdd415b189bdeb1be21b54ec2a7812a56183

hphp/runtime/base/bespoke/logging-array.cpp

@@ -154,6 +154,7 @@ ArrayData* maybeMakeLoggingArray(ArrayData* ad, LoggingProfile* profile) {
   auto const shouldEmitBespoke = [&]{
     if (shouldTestBespokeArrayLikes()) return true;
     if (RO::EvalEmitLoggingArraySampleRate == 0) return false;
+    if (RO::EvalEmitLoggingArraySampleRate == 1) return true;
 
     // We want the first sample to be vanilla and the second to be logged.
     auto const skCount = profile->data->sampleCount++;