LibC: Add definition for ENOTRECOVERABLE

This is used by the LLVM port.

Userland/Libraries/LibC/errno_numbers.h

@@ -155,6 +155,8 @@ enum ErrnoCode {
 #define EDQUOT EDQUOT
     EDQUOT,
 #define EDIRINTOSELF EDIRINTOSELF
+    ENOTRECOVERABLE,
+#define ENOTRECOVERABLE ENOTRECOVERABLE
     EMAXERRNO,
 #define EMAXERRNO EMAXERRNO
 };

Userland/Libraries/LibC/string.cpp

@@ -339,6 +339,7 @@ const char* const sys_errlist[] = {
     "Protocol family not supported",
     "Cannot make directory a subdirectory of itself",
     "Quota exceeded",
+    "State not recoverable",
     "The highest errno +1 :^)",
 };