hello.c online example doc

The following excerpt was taken from the online hello.c example html:

http://ws.apache.org/axis2/c/docs/hello/client/hello.c.html

client_home = AXIS2_GETENV("AXIS2C_HOME");
if (!client_home && !strcmp(client_home, ""))
client_home = "../..";

The test should be an OR statement instead of an AND statement. Not necessary, but also simplified by removing strcmp:

client_home = AXIS2_GETENV("AXIS2C_HOME");
if (!client_home || !(*client_home))
client_home = "../..";