Corrected faulty #if tests in udf_example.cc which made udf_test crash the server on some

platforms.

sql/udf_example.cc

@@ -681,7 +681,7 @@ my_bool lookup_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
   }
   initid->max_length=11;
   initid->maybe_null=1;
-#if !defined(HAVE_GETHOSTBYADDR_R) && defined(HAVE_SOLARIS_STYLE_GETHOST)
+#if !defined(HAVE_GETHOSTBYADDR_R) || !defined(HAVE_SOLARIS_STYLE_GETHOST)
   (void) pthread_mutex_init(&LOCK_hostname,MY_MUTEX_INIT_SLOW);
 #endif
   return 0;
@@ -689,7 +689,7 @@ my_bool lookup_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
 
 void lookup_deinit(UDF_INIT *initid)
 {
-#if !defined(HAVE_GETHOSTBYADDR_R) && defined(HAVE_SOLARIS_STYLE_GETHOST)
+#if !defined(HAVE_GETHOSTBYADDR_R) || !defined(HAVE_SOLARIS_STYLE_GETHOST)
   (void) pthread_mutex_destroy(&LOCK_hostname);
 #endif
 }
@@ -756,7 +756,7 @@ my_bool reverse_lookup_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
   }
   initid->max_length=32;
   initid->maybe_null=1;
-#if !defined(HAVE_GETHOSTBYADDR_R) && defined(HAVE_SOLARIS_STYLE_GETHOST)
+#if !defined(HAVE_GETHOSTBYADDR_R) || !defined(HAVE_SOLARIS_STYLE_GETHOST)
   (void) pthread_mutex_init(&LOCK_hostname,MY_MUTEX_INIT_SLOW);
 #endif
   return 0;
@@ -764,7 +764,7 @@ my_bool reverse_lookup_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
 
 void reverse_lookup_deinit(UDF_INIT *initid) 
 {
-#if !defined(HAVE_GETHOSTBYADDR_R) && defined(HAVE_SOLARIS_STYLE_GETHOST)
+#if !defined(HAVE_GETHOSTBYADDR_R) || !defined(HAVE_SOLARIS_STYLE_GETHOST)
   (void) pthread_mutex_destroy(&LOCK_hostname);
 #endif
 }