dthelp: Resolve 106 compiler warnings.

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

@@ -36,7 +36,7 @@
 #include "entext.h"
 
 /* Main procedure */
-void main(argc, argv)
+int main(argc, argv)
   int argc ;
   char **argv ;
   {
@@ -45,7 +45,7 @@ void main(argc, argv)
       "prevcon=%d,token=%d,curcon=%d,scanval='%c'(%d),line=%d,netlevel=%d\n" ;
     static char name[] = "m_name = '%s'\n" ;
     static char literal[] = "m_literal = '%s'\n" ;
-#if defined(hpux) || defined(_AIX) || defined(sun) || defined(USL) || defined(__uxp__) || defined(__osf__)
+#if defined(hpux) || defined(_AIX) || defined(sun) || defined(USL) || defined(__uxp__) || defined(__osf__) || defined(linux)
     char buffer[M_LITLEN + 80] ;
 #else
 #define max4(a,b,c,d) (a>b&&a>c&&a>d) ? a : ((b>c&&b>d) ? b : (c>d ? c : d))
@@ -113,5 +113,7 @@ void main(argc, argv)
       }
     /* At EOF */
     m_done() ;
+
+    return EXIT_SUCCESS;
     }
 

cde/programs/dthelp/parser/pass1/parser/proto.h

@@ -454,7 +454,7 @@ LOGICAL m_lookent(
 #endif
   ) ;
 
-void main(
+int main(
 #if defined(M_PROTO)
   int argc, char **argv
 #endif