while I'm here, fix a bunch of warnings about unused static functions and unused variables

mailnews/mime/cthandlers/glue/mimexpcom.cpp

@@ -119,8 +119,7 @@ COM_MimeObject_write(void *mimeObject, char *data, PRInt32 length,
                      PRBool user_visible_p)
 {
   nsCOMPtr<nsIMimeObjectClassAccess>  objAccess;
-  void                                *ptr = NULL;
-  PRInt32                             rc;
+  PRInt32                             rc=-1;
 
   nsresult res = nsComponentManager::CreateInstance(kMimeObjectClassAccessCID, 
                                                     NULL, nsIMimeObjectClassAccess::GetIID(), 

mailnews/mime/cthandlers/vcard/mimexpcom.cpp

@@ -119,8 +119,7 @@ COM_MimeObject_write(void *mimeObject, char *data, PRInt32 length,
                      PRBool user_visible_p)
 {
   nsCOMPtr<nsIMimeObjectClassAccess>  objAccess;
-  void                                *ptr = NULL;
-  PRInt32                             rc;
+  PRInt32                             rc=-1;
 
   nsresult res = nsComponentManager::CreateInstance(kMimeObjectClassAccessCID, 
                                                     NULL, nsIMimeObjectClassAccess::GetIID(), 

mailnews/mime/cthandlers/vcard/nsVCard.cpp

@@ -485,7 +485,7 @@ static void enterProps(const char *s)
 
 static void enterAttr(const char *s1, const char *s2)
     {
-    const char *p1, *p2;
+    const char *p1, *p2=nsnull;
     p1 = lookupProp_(s1);
     if (s2) {
 	VObject *a;
@@ -805,7 +805,7 @@ static char* lexGet1Value() {
     }
 #endif
 
-
+#if 0
 static char* lexGetStrUntil(char *termset) {
     int c = lexLookahead();
     lexClearToken();
@@ -817,6 +817,7 @@ static char* lexGetStrUntil(char *termset) {
     lexAppendc(0);
     return c==EOF?0:lexStr();
     }
+#endif
 
 static int match_begin_name(int end) {
     char *n = lexLookaheadWord();
@@ -1293,7 +1294,7 @@ yyparse()
     *yyssp = yystate = 0;
 
 yyloop:
-    if (yyn = yydefred[yystate]) goto yyreduce;
+    if ((yyn = yydefred[yystate])) goto yyreduce;
     if (yychar < 0)
     {
         if ((yychar = yylex()) < 0) yychar = 0;

mailnews/mime/cthandlers/vcard/nsVCardObj.cpp

@@ -76,9 +76,10 @@ DFARS 252.227-7013 or 48 CFR 52.227-19, as applicable.
 static const char** fieldedProp;
 
 static VObject* newVObject_(const char *id);
+#if 0
 static int vObjectValueType(VObject *o);
 static void initVObjectIterator(VObjectIterator *i, VObject *o);
-
+#endif
 /*----------------------------------------------------------------------
    The following functions involve with memory allocation:
 	newVObject
@@ -261,11 +262,12 @@ void setVObjectVObjectValue(VObject *o, VObject *p)
     VALUE_TYPE(o) = VCVT_VOBJECT;
 }
 
+#if 0
 int vObjectValueType(VObject *o)
 {
     return VALUE_TYPE(o);
 }
-
+#endif
 
 /*----------------------------------------------------------------------
   The following functions can be used to build VObject.
@@ -360,11 +362,13 @@ void initPropIterator(VObjectIterator *i, VObject *o)
     i->next = 0;
 }
 
+#if 0
 void initVObjectIterator(VObjectIterator *i, VObject *o)
 {
     i->start = o->next; 
     i->next = 0;
 }
+#endif
 
 int moreIteration(VObjectIterator *i)
 { 
@@ -1384,7 +1388,6 @@ static int inList(const char **list, const char *s)
 static void writeProp(OFile *fp, VObject *o)
 {
 	int length = -1;
-	int ilen = 0;
 
     if (NAME_OF(o)) {
 	struct PreDefProp *pi;
@@ -1440,7 +1443,6 @@ static void writeProp(OFile *fp, VObject *o)
 
 void writeVObject_(OFile *fp, VObject *o)
 {
-	int ilen = 0;
     if (NAME_OF(o)) {
 	struct PreDefProp *pi;
 	pi = lookupPropInfo(NAME_OF(o));