fix: UTF-8 data not properly formed error

[abmusse]

Error originates in bindParams() where the indicator/strlen was being set to SQL_NTS instead of the length of input. Therefore the entire string was not being passed causing malformed UTF-8 data.

This is still a WIP given that areas other than if the parameter io is SQL_PARAM_INPUT may also need to get fixed too.

Fixes #129

[abmusse]

For SQL_PARAM_INPUT_OUTPUT case I think we should set the indicator to the string length for both clobs and strings here too.

https://github.com/IBM/nodejs-idb-connector/blob/master/src/db2ia/dbstmt.cc#L2610-L2618

        else if (param[i].io == SQL_PARAM_INPUT_OUTPUT)
        {
          param[i].buf = (char *)calloc(param[i].paramSize + 1, sizeof(char));
          strncpy((char *)param[i].buf, cString, str_length);
          if (bindIndicator == 0) //CLOB
            param[i].ind = str_length;
          else if (bindIndicator == 1) //NTS
            param[i].ind = SQL_NTS;
        }

diff --git a/src/db2ia/dbstmt.cc b/src/db2ia/dbstmt.cc
--- a/src/db2ia/dbstmt.cc
+++ b/src/db2ia/dbstmt.cc
@@ -2593,7 +2593,7 @@ int DbStmt::bindParams(Napi::Env env, Napi::Array *params, std::string &error)
         const char *cString = string.c_str();
         param[i].valueType = SQL_C_CHAR;

-        if (param[i].io == SQL_PARAM_INPUT)
+        if (param[i].io == SQL_PARAM_INPUT || param[i].io == SQL_PARAM_INPUT_OUTPUT)
         {
           param[i].buf = strdup(cString);
           param[i].ind = str_length;
@@ -2603,15 +2603,6 @@ int DbStmt::bindParams(Napi::Env env, Napi::Array *params, std::string &error)
           param[i].buf = (char *)calloc(param[i].paramSize + 1, sizeof(char));
           param[i].ind = param[i].paramSize;
         }
-        else if (param[i].io == SQL_PARAM_INPUT_OUTPUT)
-        {
-          param[i].buf = (char *)calloc(param[i].paramSize + 1, sizeof(char));
-          strncpy((char *)param[i].buf, cString, str_length);
-          if (bindIndicator == 0) //CLOB
-            param[i].ind = str_length;
-          else if (bindIndicator == 1) //NTS
-            param[i].ind = SQL_NTS;
-        }
       }
       else if (bindIndicator == 2)
       { //Parameter is Integer