ICU-3500 Fix compiler warnings about multiple virtual destructors and/or not inlining compiler generated destructors.

X-SVN-Rev: 14905

icu4c/source/i18n/numfmt.cpp

@@ -90,6 +90,7 @@ const UChar * const NumberFormat::fgLastResortNumberPatterns[] =
 
 // -------------------------------------
 // SimpleNumberFormatFactory implementation
+NumberFormatFactory::~NumberFormatFactory() {}
 SimpleNumberFormatFactory::~SimpleNumberFormatFactory() {}
 
 UBool SimpleNumberFormatFactory::visible(void) const {

icu4c/source/i18n/unicode/numfmt.h

@@ -732,6 +732,12 @@ private:
 class U_I18N_API NumberFormatFactory : public UObject {
 public:
 
+    /**
+     * Destructor
+     * @draft ICU 3.0
+     */
+    virtual ~NumberFormatFactory();
+
     /**
      * Return true if this factory will be visible.  Default is true.
      * If not visible, the locales supported by this factory will not