Added back init.c, just to be safe.

src/init.c

@@ -0,0 +1,21 @@
+/*  File src/init.c in package ergm.userterms, part of the Statnet suite
+ *  of packages for network analysis, https://statnet.org .
+ *
+ *  This software is distributed under the GPL-3 license.  It is free,
+ *  open source, and has the attribution requirements (GPL Section 7) at
+ *  https://statnet.org/attribution
+ *
+ *  Copyright 2012-2019 Statnet Commons
+ */
+#include <stdlib.h> // for NULL
+#include <R_ext/Rdynload.h>
+
+static const R_CMethodDef CEntries[] = {
+    {NULL, NULL, 0}
+};
+
+void R_init_ergm_ego(DllInfo *dll)
+{
+    R_registerRoutines(dll, CEntries, NULL, NULL, NULL);
+    R_useDynamicSymbols(dll, TRUE);
+}