File coolkey-string-literal-comparison.patch of Package coolkey

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=250738
slot.cpp: In member function 'void Slot::makeLabelString(char*, int, const unsigned char*)':
slot.cpp:927: warning: comparison with string literal results in unspecified behaviour
--- src/coolkey/slot.cpp
+++ src/coolkey/slot.cpp
@@ -924,7 +924,7 @@
 //
 #define COOLKEY "CoolKey"
 #define POSSESSION " for "
-    if (!personName || personName == "") {
+    if (!personName || personName[0] == '\0' ) {
 	const int coolKeySize = sizeof(COOLKEY) ;
 	memcpy(label, COOLKEY, coolKeySize-1);
 	makeSerialString(&label[coolKeySize], maxSize-coolKeySize, cuid);