AK: Add support for mlibc in LexicalPath

AK/LexicalPath.h

@@ -10,6 +10,11 @@
 #include <AK/String.h>
 #include <AK/Vector.h>
 
+// On Linux distros that use mlibc `basename` is defined as a macro that expands to `__mlibc_gnu_basename` or `__mlibc_gnu_basename_c`, so we undefine it.
+#if defined(AK_OS_LINUX) && defined(basename)
+#    undef basename
+#endif
+
 namespace AK {
 
 class LexicalPath {