Modify dup count correctly when dimensions are removed.

Though normally dimensions don't get removed, since the entire save data
gets re-built whenever the pivot model is modified.  So, this is probably
for limited use cases...

sc/inc/dputil.hxx

@@ -37,6 +37,8 @@ public:
     static bool isDuplicateDimension(const rtl::OUString& rName);
 
     static rtl::OUString getSourceDimensionName(const rtl::OUString& rName);
+
+    static rtl::OUString createDuplicateDimensionName(const rtl::OUString& rOriginal, size_t nDupCount);
 };
 
 #endif

sc/source/core/data/dpsave.cxx

@@ -1277,12 +1277,7 @@ void ScDPSaveData::CheckDuplicateName(ScDPSaveDimension& rDim)
     DupNameCountType::iterator it = maDupNameCounts.find(aName);
     if (it != maDupNameCounts.end())
     {
-        it->second = it->second + 1;
-        // This is a duplicate name.  Up the counter and append '*' to make the name unique.
-        rtl::OUStringBuffer aBuf(aName);
-        for (size_t i = 0, n = it->second; i < n; ++i)
-            aBuf.append(sal_Unicode('*'));
-        rDim.SetName(aBuf.makeStringAndClear());
+        rDim.SetName(ScDPUtil::createDuplicateDimensionName(aName, ++it->second));
         rDim.SetDupFlag(true);
     }
     else
@@ -1292,6 +1287,22 @@ void ScDPSaveData::CheckDuplicateName(ScDPSaveDimension& rDim)
 
 void ScDPSaveData::RemoveDuplicateNameCount(const rtl::OUString& rName)
 {
+    rtl::OUString aCoreName = rName;
+    if (ScDPUtil::isDuplicateDimension(rName))
+        aCoreName = ScDPUtil::getSourceDimensionName(rName);
+
+    DupNameCountType::iterator it = maDupNameCounts.find(aCoreName);
+    if (it == maDupNameCounts.end())
+        return;
+
+    if (!it->second)
+    {
+        maDupNameCounts.erase(it);
+        return;
+    }
+
+    --it->second;
+    return;
 }
 
 ScDPSaveDimension* ScDPSaveData::AppendNewDimension(const rtl::OUString& rName, bool bDataLayout)

sc/source/core/data/dputil.cxx

@@ -44,4 +44,16 @@ rtl::OUString ScDPUtil::getSourceDimensionName(const rtl::OUString& rName)
     return comphelper::string::removeTrailingChars(rName, sal_Unicode('*'));
 }
 
+rtl::OUString ScDPUtil::createDuplicateDimensionName(const rtl::OUString& rOriginal, size_t nDupCount)
+{
+    if (!nDupCount)
+        return rOriginal;
+
+    rtl::OUStringBuffer aBuf(rOriginal);
+    for (size_t i = 0; i < nDupCount; ++i)
+        aBuf.append(sal_Unicode('*'));
+
+    return aBuf.makeStringAndClear();
+}
+
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