fix various flaws detected by PVS

src/Base/Quantity.cpp

@@ -50,7 +50,7 @@ int QuantityFormat::defaultDenominator = 8; // for 1/8"
 
 
 QuantityFormat::QuantityFormat()
-  : option(static_cast<NumberOption>(OmitGroupSeparator | RejectGroupSeparator))
+  : option(OmitGroupSeparator | RejectGroupSeparator)
   , format(Fixed)
   , precision(UnitsApi::getDecimals())
   , denominator(defaultDenominator)

src/Base/Quantity.h

@@ -48,7 +48,8 @@ struct BaseExport QuantityFormat {
         Scientific = 2
     };
 
-    NumberOption option;
+    typedef int NumberOptions;
+    NumberOptions option;
     NumberFormat format;
     int precision;
     int denominator;