fix warning

src/3rdParty/libkdtree/kdtree++/kdtree.hpp

@@ -473,10 +473,10 @@ namespace KDTree
         }
 
       const_iterator
-      find_within_range_iterative(const_reference __a, const_reference __b)
-	{
-	  return const_iterator(begin());
-	}
+        find_within_range_iterative(const_reference /*__a*/, const_reference /*__b*/)
+        {
+          return const_iterator(begin());
+        }
 
       template <typename SearchVal, typename _OutputIterator>
         _OutputIterator

src/Base/QuantityPyImp.cpp

@@ -633,7 +633,7 @@ void  QuantityPy::setFormat(Py::Tuple arg)
         throw Py::ValueError("Invalid format character");
 
     bool ok;
-    fmt.format = Base::QuantityFormat::toFormat(fmtstr.front(), &ok);
+    fmt.format = Base::QuantityFormat::toFormat(fmtstr[0], &ok);
     if (!ok)
         throw Py::ValueError("Invalid format character");
 

src/Base/Tools.cpp

@@ -153,7 +153,6 @@ std::string Base::Tools::escapedUnicodeFromUtf8(const char *s)
         return escapedstr;
 
     PyObject* escaped = PyUnicode_AsUnicodeEscapeString(unicode);
-
     if (escaped) {
 #if PY_MAJOR_VERSION >= 3
         escapedstr = std::string(PyBytes_AsString(escaped));
@@ -162,8 +161,8 @@ std::string Base::Tools::escapedUnicodeFromUtf8(const char *s)
 #endif
         Py_DECREF(escaped);
     }
-    Py_DECREF(unicode);
 
+    Py_DECREF(unicode);
     return escapedstr;
 }
 

src/Base/UnitsApiPy.cpp

@@ -209,7 +209,7 @@ PyObject* UnitsApi::sSchemaTranslate(PyObject * /*self*/, PyObject *args,PyObjec
     quant = *static_cast<Base::QuantityPy*>(q)->getQuantityPtr();
 
     std::unique_ptr<UnitsSchema> schema(createSchema(static_cast<UnitSystem>(index)));
-    if (!schema) {
+    if (!schema.get()) {
         PyErr_SetString(PyExc_ValueError, "invalid schema value");
         return 0;
     }