Datafield: rnm local var

Device/Data/Datafield.cpp

@@ -77,8 +77,8 @@ double Datafield::valAt(size_t i) const
 
 void Datafield::setAllTo(const double& value)
 {
-    for (double& e : m_values)
-        e = value;
+    for (double& v : m_values)
+        v = value;
 }
 
 void Datafield::setVector(const std::vector<double>& vector)