dthelp: more coverity fixes

cde/programs/dthelp/parser/pass1/build/out.c

@@ -483,7 +483,7 @@ char *partype(n)
 void srefout(M_NOPAR)
   {
     LOGICAL first = TRUE ;
-    int *mapbysref ;
+    int *mapbysref = NULL;
     SREFSTRUCT *srefp ;
     SREFDATA *data ;
     int count = 0 ;
@@ -544,6 +544,7 @@ void srefout(M_NOPAR)
       fputs(ndif, dtd) ;
       }
     SUBONE
+    free(mapbysref);
     }
 
 /* Output one element block in a template */

cde/programs/dthelp/parser/pass1/util/conutil.c

@@ -424,8 +424,9 @@ if (loading) newdlm = (char **) calloc(trysize, sizeof(M_WCHAR *));
 if (! newtransit || (loading && ! newdlm))
     {
     trysize = NUMDELIM + 1;
+    free(newtransit);
     newtransit = (int *) calloc(NUMCON * trysize, sizeof(int));
-    if (loading) newdlm = (char **) calloc(trysize, sizeof(M_WCHAR *));
+    if (loading) { free(newdlm); newdlm = (char **) calloc(trysize, sizeof(M_WCHAR *)); }
     }
 if (! newtransit || (loading && ! newdlm))
     {

cde/programs/dthelp/parser/pass1/util/fclndir.c

@@ -144,6 +144,7 @@ void copyfile(pfile1,pfile2)
 	ret = system(pcmd);
 	ret = snprintf(pcmd, slen, "touch %s",pfile2);
 	ret = system(pcmd);
+	free(pcmd);
 }
 
 int nextchar(file, data)