winaccessibility: improve GenerateNewResId()

Change-Id: I81f98ca83b97bc2e3e419c7a37ad2a011932553b

winaccessibility/inc/ResIDGenerator.hxx

@@ -29,28 +29,22 @@ class ResIDGenerator
 {
 private:
 
-    long min;
     long max;
     std::deque<long> subList;
 
 public:
 
-    ResIDGenerator( long minNum = PRIMARY_RESID,long maxNum = PRIMARY_RESID);
+    ResIDGenerator(long maxNum = PRIMARY_RESID)
+        : max(maxNum) {}
+    ~ResIDGenerator();
     long GenerateNewResID();
     void SetSub(long number)
     {
         subList.push_back(number);
     };
-    virtual ~ResIDGenerator();
 
 };
 
-inline ResIDGenerator::ResIDGenerator( long minNum ,long maxNum )
-{
-    min = minNum;
-    max = maxNum;
-}
-
 #endif
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

winaccessibility/source/service/ResIDGenerator.cxx

@@ -19,12 +19,8 @@
 
 #include "ResIDGenerator.hxx"
 
-/**
-   * Destructor
-   *
-   * @param
-   * @return
-   */
+#include <cassert>
+
 ResIDGenerator::~ResIDGenerator()
 {
 }
@@ -39,15 +35,13 @@ ResIDGenerator::~ResIDGenerator()
    */
 long ResIDGenerator::GenerateNewResID()
 {
-    if (max == LONG_MAX)
+    if (!subList.empty())
     {
-        if (!subList.empty())
-        {
-            long nRes = *(subList.begin());
-            subList.pop_front();
-            return nRes;
-        }
+        long nRes = *(subList.begin());
+        subList.pop_front();
+        return nRes;
     }
+    assert(max < LONG_MAX);
     return -(++max);
 }