Remove atomics from reference counting

Also fix the initial value. Fixes #1

array.c

@@ -20,7 +20,6 @@
 
 #include <errno.h>
 #include <math.h>
-#include <stdatomic.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -37,7 +36,7 @@ struct _Array
     size_t capacity;
     FreeFunc free_func;
     
-    atomic_int ref_count;
+    int ref_count;
 };
 
 static void
@@ -92,6 +91,7 @@ array_new (FreeFunc func)
     array->length = 0;
     array->capacity = MIN_SIZE;
     array->free_func = func;
+    array->ref_count = 1;
 
     return array;
 }
@@ -107,7 +107,7 @@ array_new (FreeFunc func)
 Array *
 array_ref (Array *array)
 {
-    atomic_fetch_add (&array->ref_count, 1);
+    array->ref_count++;
 
     return array;
 }
@@ -122,7 +122,9 @@ array_ref (Array *array)
 void
 array_unref (Array *array)
 {
-    if (atomic_fetch_sub (&array->ref_count, 1) == 1)
+    array->ref_count--;
+
+    if (array->ref_count == 0)
     {
         if (array->free_func)
         {