Fix #5898 (#6607)

Not reloading sdb_types if editing env_vars results no change

libr/anal/anal.c

@@ -149,6 +149,8 @@ R_API void r_anal_list(RAnal *anal) {
 R_API bool r_anal_use(RAnal *anal, const char *name) {
 	RListIter *it;
 	RAnalPlugin *h;
+
+	bool change = anal && anal->cur && strcmp (anal->cur->name, name);
 	r_list_foreach (anal->plugins, it, h) {
 		if (!strcmp (h->name, name)) {
 #if 0
@@ -159,7 +161,9 @@ R_API bool r_anal_use(RAnal *anal, const char *name) {
 #endif
 			anal->cur = h;
 			r_anal_set_reg_profile (anal);
-			r_anal_set_fcnsign (anal, NULL);
+			if (change) {
+				r_anal_set_fcnsign (anal, NULL);
+			}
 			if (anal->esil) {
 				r_anal_esil_free (anal->esil);
 				anal->esil = NULL;

libr/core/cconfig.c

@@ -355,7 +355,13 @@ static int cb_asmarch(void *user, void *data) {
 	r_asm_set_cpu (core->assembler, asm_cpu);
 	free (asm_cpu);
 	/* reload types and cc info */
-	r_core_anal_type_init (core);
+	// changing asm.arch changes anal.arch
+	// changing anal.arch sets types db
+	// so ressetting is redundant and may lead to bugs
+	// 1 case this is usefull is when sdb_types is null
+	if (!core->anal->sdb_types) {
+		r_core_anal_type_init (core);
+	}
 	r_core_anal_cc_init (core);
 	return true;
 }