Move LibC to lib.cr

src/crypto-secret/lib.cr

@@ -0,0 +1,11 @@
+require "crypto/subtle"
+
+lib LibC
+  fun explicit_bzero(Void*, LibC::SizeT) : Void
+end
+
+struct Slice(T)
+  def wipe
+    LibC.explicit_bzero to_unsafe, bytesize
+  end
+end

src/crypto-secret/secret.cr

@@ -1,14 +1,4 @@
-require "crypto/subtle"
+require "./lib"
-
-lib LibC
-  fun explicit_bzero(Void*, LibC::SizeT) : Void
-end
-
-struct Slice(T)
-  def wipe
-    LibC.explicit_bzero to_unsafe, bytesize
-  end
-end
 
 # Interface to hold sensitive information (often cryptographic keys)
 #