WaE: fix some minor class/struct mismatches

uui/source/iahndl.hxx

@@ -51,7 +51,7 @@ namespace com { namespace sun { namespace star {
         class XMultiServiceFactory;
     }
     namespace security {
-        class DocumentSignatureInformation;
+        struct DocumentSignatureInformation;
     }
     namespace task {
         class FutureDocumentVersionProductUpdateRequest;

vcl/inc/fontcache.hxx

@@ -36,11 +36,6 @@ namespace psp
 
 class VCL_PLUGIN_PUBLIC FontCache
 {
-    struct FontDir;
-    friend class FontDir;
-    struct FontFile;
-    friend class FontFile;
-
     typedef std::list< PrintFontManager::PrintFont* > FontCacheEntry;
     struct FontFile
     {
@@ -93,3 +88,4 @@ public:
 } // namespace psp
 
 #endif // _PSPRINT_FONTCACHE_HXX
+

vcl/inc/printergfx.hxx

@@ -35,7 +35,7 @@
 namespace psp {
 
 // forwards
-class JobData;
+struct JobData;
 
 /*
  * lightweight container to handle RGB values
@@ -124,7 +124,7 @@ class Font3;
 class GlyphSet;
 class PrinterJob;
 class PrintFontManager;
-class KernPair;
+struct KernPair;
 struct CharacterMetric;
 
 /*

vcl/inc/unx/salgdi.h

@@ -38,8 +38,8 @@
 #include <deque>
 
 // -=-= forwards -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-struct  ImplFontMetricData;
-struct  ImplFontSelectData;
+class   ImplFontMetricData;
+class   ImplFontSelectData;
 class   SalBitmap;
 class   SalColormap;
 class   SalDisplay;