operator[] takes size_t index parameter (versus unsigned int)

Author: kozyilmaz

include/univalue.h

@@ -71,7 +71,7 @@ class UniValue {
     bool getBool() const { return isTrue(); }
     bool checkObject(const std::map<std::string,UniValue::VType>& memberTypes);
     const UniValue& operator[](const std::string& key) const;
-    const UniValue& operator[](unsigned int index) const;
+    const UniValue& operator[](size_t index) const;
     bool exists(const std::string& key) const { size_t i; return findKey(key, i); }
 
     bool isNull() const { return (typ == VNULL); }

lib/univalue.cpp

@@ -251,7 +251,7 @@ const UniValue& UniValue::operator[](const std::string& key) const
     return values.at(index);
 }
 
-const UniValue& UniValue::operator[](unsigned int index) const
+const UniValue& UniValue::operator[](size_t index) const
 {
     if (typ != VOBJ && typ != VARR)
         return NullUniValue;