libdtsvc: Resolve Uninitialized warnings

cde/lib/DtSvc/DtUtil2/ChkpntListen.c

@@ -67,7 +67,7 @@ _DtPerfChkpntListenInit(Display *display, Window parentwin)
 #endif
 {
     Time   timestamp = INVALID_TIME;
-    Window tmpwin;
+    Window tmpwin = 0;
     Bool   bsuccess = False;
 
     _DtSvcProcessLock();

cde/lib/DtSvc/DtUtil2/Hash.c

@@ -110,12 +110,12 @@ GetTableIndex(
 #endif /* NeedWidePrototypes */
 {
     DtHashEntry	*entries = tab->entries;
-    int		len, idx, i, rehash = 0;
+    int		len = 0, idx, i, rehash = 0;
     char 		c;
     Signature 		sig = 0;
     DtHashEntry	entry;
     String			s1, s2;
-    DtHashKey			compKey;
+    DtHashKey			compKey = NULL;
 
     if (tab->keyIsString) {
 	s1 = (String)key;

cde/lib/DtSvc/DtUtil2/SharedProcs.c

@@ -209,7 +209,7 @@ _DtMessageDialog(
         int dialogType )
 
 {
-   Widget message;
+   Widget message = NULL;
    Widget widget;
    XmString message_string;
    XWindowAttributes attributes;

cde/lib/DtSvc/DtUtil2/addToRes.c

@@ -290,7 +290,7 @@ _DtGetEntries(
         int dosort )
 {
     char *line, *colon, *temp, *str, *temp2;
-    Entry entry;
+    Entry entry = { NULL, NULL, 0, False };
     int length;
     int lineno = 0;