Change a function signature

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/engine/CarlaEngineOsc.hpp

@@ -67,12 +67,12 @@ public:
 
     // -------------------------------------------------------------------
 
-    const char* getServerPathTCP() const noexcept
+    const CarlaString& getServerPathTCP() const noexcept
     {
         return fServerPathTCP;
     }
 
-    const char* getServerPathUDP() const noexcept
+    const CarlaString& getServerPathUDP() const noexcept
     {
         return fServerPathUDP;
     }