This looks like a typo

...from a11be8a8 "use size_t where possible and
fix some more places."

Change-Id: I27c6d3532dd3f672d7b06b60add32d44a20d9068

sc/inc/document.hxx

@@ -692,7 +692,7 @@ public:
     /** Returns the result matrix of the specified DDE link.
         @param nDdePos  Index of the DDE link (does not include other links from link manager).
         @return  The result matrix, if the DDE link has been found, 0 otherwise. */
-    SC_DLLPUBLIC const ScMatrix* GetDdeLinkResultMatrix( sal_uInt16 size_t ) const;
+    SC_DLLPUBLIC const ScMatrix* GetDdeLinkResultMatrix( size_t nDdePos ) const;
 
     /** Tries to find a DDE link or creates a new, if not extant.
         @param pResults  If not 0, sets the matrix as as DDE link result matrix (also for existing links).

sc/source/core/data/documen8.cxx

@@ -1377,7 +1377,7 @@ bool ScDocument::GetDdeLinkMode( size_t nDdePos, sal_uInt8& rnMode ) const
     return false;
 }
 
-const ScMatrix* ScDocument::GetDdeLinkResultMatrix( sal_uInt16 nDdePos ) const
+const ScMatrix* ScDocument::GetDdeLinkResultMatrix( size_t nDdePos ) const
 {
     const ScDdeLink* pDdeLink = lclGetDdeLink( GetLinkManager(), nDdePos );
     return pDdeLink ? pDdeLink->GetResult() : NULL;