Corrected memory leak

transition_machine/src/Oracle.cpp

@@ -275,14 +275,15 @@ void Oracle::createDatabase()
     for(int i = start; i <= end; i++)
     {
       const std::string & form = c.getTape("FORM").getRef(i);
-      std::string & signature = oracle->data[form];
+      std::string signature;
      
-      if(signature.empty())
+      if (oracle->data.count(form))
+        signature = oracle->data[form];
+      else if (oracle->data.count(noAccentLower(form)))
         signature = oracle->data[noAccentLower(form)];
-
-      if(signature.empty())
-        action += std::string(" ") + "UNKNOWN";
       else
+        signature = "UNKNOWN";
+
       action += std::string(" ") + signature;
     }
 
@@ -323,14 +324,15 @@ void Oracle::createDatabase()
   {
     const std::string & form = c.getTape("FORM")[0];
     const std::string & pos = c.getTape("POS")[0];
-    std::string & lemma = oracle->data[form + "_" + pos];
+    std::string lemma;
     
-    if(lemma.empty())
+    if (oracle->data.count(form + "_" + pos))
+      lemma = oracle->data[form + "_" + pos];
+    else if (oracle->data.count(noAccentLower(form)+"_"+pos))
       lemma = oracle->data[noAccentLower(form) + "_" + pos];
-
-    if(lemma.empty())
-      return std::string("NOTFOUND");
     else
+      return std::string("NOTFOUND");
+
     return std::string("WRITE b.0 LEMMA ") + lemma;
   },
   [](Config &, Oracle *, const std::string &)