Attempt to fix:

error: call of overloaded ‘basic_string(const Poco::Dynamic::Var&)’ is ambiguous

Signed-off-by: Gökay Şatır <gokaysatir@collabora.com>
Change-Id: Ibaa77e94a8e12f1dbc38e40b14ce8184dafcd7bd

wsd/COOLWSD.cpp

@@ -1392,7 +1392,7 @@ public:
                 LOG_WRN("Element in fonts array is not a string");
             else
             {
-                fonts[std::string(fontPtr)].active = true;
+                fonts[fontPtr.toString()].active = true;
             }
         }