Keep from dereferencing through a null pointer.

SCCS-vsn: usr.bin/tn3270/api/astosc.c 1.4

diff --git a/usr/src/usr.bin/tn3270/api/astosc.c b/usr/src/usr.bin/tn3270/api/astosc.c
index 1786363..a3ada1e 100644 (file)
--- a/usr/src/usr.bin/tn3270/api/astosc.c
+++ b/usr/src/usr.bin/tn3270/api/astosc.c
@@ -53,7 +53,7 @@ register char *string;
     register struct astosc *this;
 
     for (this = astosc; this <= &astosc[highestof(astosc)]; this++) {
     register struct astosc *this;
 
     for (this = astosc; this <= &astosc[highestof(astosc)]; this++) {

-       if (ustrcmp(this->name, string) == 0) {
+       if ((this->name != 0) && (ustrcmp(this->name, string) == 0)) {

            return this-astosc;
        }
     }
            return this-astosc;
        }
     }