Refactorized multiple prototypes

Author: airween

src/utils/string.cc

@@ -135,10 +135,6 @@ std::string string_to_hex(const std::string& input) {
     return output;
 }
 
-std::string toHexIfNeeded(const std::string &str) {
-    return toHexIfNeeded(str, false);
-}
-
 std::string toHexIfNeeded(const std::string &str, bool escape_spec) {
     // escape_spec: escape special chars or not
     // spec chars: '"' (quotation mark, ascii 34), '\' (backslash, ascii 92)

src/utils/string.h

@@ -61,8 +61,7 @@ std::string dash_if_empty(const std::string *str);
 std::string limitTo(int amount, const std::string &str);
 std::string removeBracketsIfNeeded(std::string a);
 std::string string_to_hex(const std::string& input);
-std::string toHexIfNeeded(const std::string &str);
-std::string toHexIfNeeded(const std::string &str, bool escape_spec);
+std::string toHexIfNeeded(const std::string &str, bool escape_spec = false);
 std::string tolower(std::string str);
 std::string toupper(std::string str);
 std::vector<std::string> ssplit(std::string str, char delimiter);