Fixed return of local variable

src/storm-pgcl/settings/modules/PGCLSettings.cpp

@@ -43,7 +43,7 @@ namespace storm {
                 return this->getOption(pgclToJaniOptionName).getHasOptionBeenSet();
             }
             
-            std::string const& PGCLSettings::getWriteToJaniFilename() const {
+            std::string PGCLSettings::getWriteToJaniFilename() const {
                 return this->getOption(pgclToJaniOptionName).getArgumentByName("filename").getValueAsString();
             }
 

src/storm-pgcl/settings/modules/PGCLSettings.h

@@ -32,7 +32,7 @@ namespace storm {
                 /**
                  * returns the file name where jani output should be stored.
                  */
-                std::string const& getWriteToJaniFilename() const;
+                std::string getWriteToJaniFilename() const;
                 
                 /**
                  * Whether the program graph should be drawn (dot output)