change number of warning for missing svfit cache from 30 to 1

empty string of missing svfit cache defaults to "null" instead of ""
circumvent by comparison to "null" instead of ""

Author: azotz

Diff for: src/Producers/SvfitProducers.cc

@@ -40,7 +40,7 @@ void SvfitProducer::Init(setting_type const& settings, metadata_type& metadata)
 {
 	ProducerBase<HttTypes>::Init(settings, metadata);
 
-	if (! (settings.*GetSvfitCacheFileMember)().empty())
+	if ( (settings.*GetSvfitCacheFileMember)() != "null")
 	{
 		svfitTools.Init(
 				(settings.*GetSvfitCacheFileMember)(),

Diff for: src/Utility/SvfitTools.cc

@@ -631,7 +631,7 @@ SvfitResults SvfitTools::GetResults(SvfitEventKey const& svfitEventKey, SvfitInp
 	{
 		if(svfitCacheMissBehaviour == HttEnumTypes::SvfitCacheMissBehaviour::recalculate)
 		{
-			LOG_N_TIMES(30, INFO) << "SvfitCache miss: No corresponding entry to the current inputs found in SvfitCache file. Re-Running SvFit. Did your inputs change?"
+			LOG_N_TIMES(1, INFO) << "SvfitCache miss: No corresponding entry to the current inputs found in SvfitCache file. Re-Running SvFit. Did your inputs change?"
 			                      << std::endl << "Cache searched in tree: \"" << cacheFileTreeName << "\".";
 		}
 		if(svfitCacheMissBehaviour == HttEnumTypes::SvfitCacheMissBehaviour::assert)