fix: add loaded symbols count increment

src/vm/fzl_vm.c

@@ -8,7 +8,6 @@
 #include <string.h>
 #include <vm/fzl_vm.h>
 #include <vm/fzl_vm_env.h>
-#include <vm/fzl_vm_extern.h>
 #include <vm/fzl_vm_object.h>
 #include <vm/fzl_vm_reader.h>
 #include <vm/internals/opcode.h>
@@ -36,14 +35,6 @@ fzl_vm_t *fzl_mkvm(fzl_vm_reader_t *reader)
   memset(vm, 0, sizeof(fzl_vm_t));
   vm->reader = reader;
 
-  vm->prep_fns = fzl_vm_init_externs(reader);
-  if (!vm->prep_fns)
-  {
-    char *err = fzl_vm_externs_geterror();
-    strcpy(last_err, err);
-    return NULL;
-  }
-
   return vm;
 }
 

src/vm/fzl_vm_extern.c

@@ -188,7 +188,7 @@ fzl_vm_extern_t *fzl_vm_init_externs(fzl_vm_reader_t *reader)
       return NULL;
     }
 
-    if (!prepare_sym(reader, sym, fn, &ex->syms[i]))
+    if (!prepare_sym(reader, sym, fn, &ex->syms[ex->syms_loaded++]))
     {
       if (!ex_err[0])
       {

src/vm/main.c

@@ -6,6 +6,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <vm/fzl_vm.h>
+#include <vm/fzl_vm_extern.h>
 #include <vm/fzl_vm_reader.h>
 
 typedef struct
@@ -140,6 +141,13 @@ int main(int argc, char **argv)
     return -1;
   }
 
+  vm->prep_fns = fzl_vm_init_externs(reader);
+  if (!vm->prep_fns)
+  {
+    printf("%sError%s: %s\n", FZL_CERROR, FZL_CRST, fzl_vm_externs_geterror());
+    return -1;
+  }
+
   vm->allow_infinite = args->allow_infinite;
   vm->max_iter       = args->max_iter;