PVS V739: EOF compared with a value of the char type.

Change-Id: Icfaff590359381fbdd3bbd7993dab92111da3ed1
Reviewed-on: https://review.haiku-os.org/c/1618
Reviewed-by: waddlesplash <[email protected]>

src/bin/multiuser/login.cpp

@@ -34,7 +34,7 @@ read_string(char* string, size_t bufferSize)
 	// TODO: setup timeout handler
 
 	// read everything until the next carriage return
-	char c;
+	int c;
 	while ((c = fgetc(stdin)) != EOF && c != '\r' && c != '\n') {
 		if (bufferSize > 1) {
 			string[0] = c;