Fix warnings and dependencies

pgsql/Pgsql_Connection.h

@@ -5,12 +5,8 @@
 #include <libpq-fe.h>
 #include <QString>
 
-#include <vector>
-#include <codecvt>
 #include <memory>
 
-#include <fmt/format.h>
-
 #include "Pgsql_Canceller.h"
 #include "Pgsql_Result.h"
 

pgsql/Pgsql_Params.cpp

@@ -116,7 +116,7 @@ void Params::clear()
 void Params::appendValues(const t_paramValues &r)
 {
     const int n = static_cast<int>(r.size());
-    const int ofs = m_paramValues.size();
+    const size_t ofs = m_paramValues.size();
     m_paramValues.reserve(ofs + n);
 	for (int i = 0; i < n; ++i) {
 		if (r[i]) {

pgsql/Pgsql_Value.cpp

@@ -128,7 +128,7 @@ Value::operator int64_t() const
     if (m_val == nullptr)
         return 0LL;
 
-    const int len = std::strlen(m_val);
+    const size_t len = std::strlen(m_val);
 	if (len > 0) {
 		char *endptr = nullptr;
 		int64_t result = std::strtoll(m_val, &endptr, 10);
@@ -136,7 +136,6 @@ Value::operator int64_t() const
 			return result;
 	}
 	throw std::runtime_error("Value conversion to int64_t failed");
-//	return std::strtoll(m_val, nullptr, 10);
 }
 
 Value::operator bool() const

pgsql/pgsql.pro

@@ -7,7 +7,7 @@
 CONFIG   += staticlib
 QT       += core
 
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets sql
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
 TARGET = pgsql
 TEMPLATE = lib