Use §Restrict in loadmasters

src/vmod_slash.man.rst

@@ -1073,8 +1073,11 @@ the same backend momentarily. This effect should average out.
 VOID xloadmaster_rr.add_storage(STEVEDORE)
 ------------------------------------------
 
-Add a storage to the loadmaster. May only be called from ``vcl_init
-{}``.
+Add a storage to the loadmaster.
+
+Restricted to: ``vcl_init``.
+
+
 
 .. _xloadmaster_rr.storage():
 
@@ -1103,6 +1106,10 @@ VOID xloadmaster_hash.add_storage(STEVEDORE)
 
 Same as `xloadmaster_rr.add_storage()`_.
 
+Restricted to: ``vcl_init``.
+
+
+
 .. _xloadmaster_hash.storage():
 
 STEVEDORE xloadmaster_hash.storage()

src/vmod_slash.vcc

@@ -982,8 +982,9 @@ the same backend momentarily. This effect should average out.
 
 $Method VOID .add_storage(STEVEDORE)
 
-Add a storage to the loadmaster. May only be called from ``vcl_init
-{}``.
+Add a storage to the loadmaster.
+
+$Restrict vcl_init
 
 $Method STEVEDORE .storage()
 
@@ -1003,6 +1004,8 @@ $Method VOID .add_storage(STEVEDORE)
 
 Same as `xloadmaster_rr.add_storage()`_.
 
+$Restrict vcl_init
+
 $Method STEVEDORE .storage()
 
 Same as `xloadmaster_rr.storage()`_.

src/vmod_slash_loadmasters.c

@@ -234,11 +234,7 @@ vmod_loadmaster_ ## ll ## _add_storage(VRT_CTX,				\
 	lc = lm->lc;							\
 	CHECK_OBJ_NOTNULL(lc, LOADMASTER_COMMON_MAGIC);			\
 									\
-	if (ctx->method != VCL_MET_INIT) {				\
-		VRT_fail(ctx, "%s.add_storage() "			\
-		    "can only be called from vcl_init{}", lc_name(lc));	\
-		return;							\
-	}								\
+	assert(ctx->method == VCL_MET_INIT);				\
 									\
 	if (stv == NULL) {						\
 		VRT_fail(ctx, "%s.add_storage() can not be used "	\