error: case value evaluates to -1, which cannot be narrowed to type 'size_t' (aka 'unsigned long')

Index: main.C
--- main.C.orig
+++ main.C
@@ -1052,10 +1052,6 @@ DaemonInit(unsigned int displayNum)
       CERR << "Found empty pidfile " << lockfilename
 	<< ".  Overriding." << ENDL;
       break;
-    case -1:
-      CERR << "Error reading from old pidfile " << lockfilename
-	<< ".  Overriding." << ENDL;
-      break;
     default:
       // Do a sanity check on the returned data
       if (!isdigit((int) ((unsigned char) oldpid[0])))
@@ -1125,7 +1121,6 @@ KillDaemon(unsigned int displayNum)
     switch (fread(pid, 1, sizeof(pid), pidfile))
     {
     case 0:
-    case -1:
       CERR << "Error reading pid from " << lockfilename << ENDL
 	<< "You will have to manually kill the daemon." << ENDL;