dthelp: more coverity fixes

cde/programs/dthelp/dthelpprint/PrintUtil.c

@@ -192,6 +192,7 @@ int _DtHPrGenFileOrPrint(
    if ( (status = system(printCommand))!= 0)
    {
       unlink(tmpfile);
+      free(tmpfile);
       return status;                           /* RETURN */
    }
 

cde/programs/dthelp/parser/canon1/helptag/help.c

@@ -1610,6 +1610,7 @@ else
 	{
 	strcpy(pCharset, charset);
 	mb_free(&charset);
+	free(charset);
 	}
     else
 	strcpy(pCharset, isoString);
@@ -2809,7 +2810,7 @@ int	 tryleng = sizeof(pathbuf);
 int	 pathleng;
 int	 fileleng;
 SEARCH	*thispath;
-char	*mb_inputname;
+char	*mb_inputname = NULL;
 M_WCHAR *wc_try, *wc_outputname;
 int	 tossfile;
 char	 filebuf[BIGBUF];
@@ -2876,6 +2877,8 @@ else
     }
 
 if (try != pathbuf) mb_free(&try);
+
+mb_free(&mb_inputname);
 }
 
 /* Below is a modified version of m_cyclent() that returns a pointer

cde/programs/dthelp/parser/canon1/helptag/xref.c

@@ -155,6 +155,7 @@ strcpy(helpext, ".xrh");
 tex = fopen(helpbase, "w");
 fprintf(tex, "\\gobble\001%s\002%%\n", m_signon);
 fputs("% Generated Cross-Reference Macros (for a particular document)\n", tex);
+fclose(tex);
 if (! xtree.data) return;
 
 n = 0;

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)

cde/programs/dthelp/parser/pass2/eltdef/eltdef.c

@@ -75,7 +75,7 @@ int main(argc, argv)
       fprintf(stderr, "**** Specify interface file ****\n") ;
       exit(TRUE) ;
       }
-    strncpy(iffile, argv[1], IFLEN) ;
+    strncpy(iffile, argv[1], IFLEN - 1) ;
     initialize() ;
     while (TRUE) {
       m_token = scan() ;

cde/programs/dthelp/parser/pass2/htag2/sdl.c

@@ -6395,7 +6395,7 @@ while (incr)
  * the amount of padding needed in between the vstruct and the first
  * virpage to make everything work
 */
-static int CompressVstruct()
+static void CompressVstruct()
 {
 #define COMPRESS_PAD_LENGTH 10
 char      buffer[BUFSIZ], zTemp[4];

cde/programs/dthelp/parser/pass2/util/entout.c

@@ -72,8 +72,7 @@ void entout(fname)
     int nameindex ;
     LOGICAL start ;
 
-    strncpy(efilename, fname, ENTFILENAME) ;
+    snprintf(efilename, sizeof(efilename), "%s.h", fname);
-    strncpy(&efilename[strlen(efilename)], ".h", 2) ;
     m_openchk(&entfile, efilename, "w") ;
 
     fprintf(entfile, "#include \"entdef.h\"\n") ;