Fix warnings and dependencies

pglablib/utils/HumanReadableBytes.cpp

@@ -42,7 +42,7 @@ std::string HumanReadableBytes(uint64_t bytes)
                              };
 
     std::ostringstream out;
-    for (int i = 0; i < (sizeof(scales) / sizeof(scale)); ++i)
+    for (unsigned int i = 0; i < (sizeof(scales) / sizeof(scale)); ++i)
     {
         if (bytes >= scales[i].scale)
         {

pglablib/utils/KeyStrengthener.cpp

@@ -44,10 +44,10 @@ void KeyStrengthener::saveParams(SQLiteConnection &db, const QString &table_name
                            + "VALUES(?1, ?2, ?3, ?4, ?5, ?6, ?7)");
     stmt.Bind(1, 1);
     stmt.Bind(2, "Scrypt");
-    stmt.Bind(3, i1);
-    stmt.Bind(4, i2);
-    stmt.Bind(5, i3);
-    stmt.Bind(6, m_keySize);
+    stmt.Bind(3, (int)i1);
+    stmt.Bind(4, (int)i2);
+    stmt.Bind(5, (int)i3);
+    stmt.Bind(6, (int)m_keySize);
     stmt.Bind(7, salt_str);
     stmt.Step();
 }