CAPI - use size_t for size_approx

Author: cboulay

c_api/concurrentqueue.cpp

@@ -31,9 +31,9 @@ int moodycamel_cq_try_dequeue(MoodycamelCQHandle handle, MoodycamelValue* value)
 	return reinterpret_cast<MoodycamelCQPtr>(handle)->try_dequeue(*value) ? 1 : 0;
 }
 
-unsigned int moodycamel_cq_size_approx(MoodycamelCQHandle handle)
+size_t moodycamel_cq_size_approx(MoodycamelCQHandle handle)
 {
-    return (unsigned int)reinterpret_cast<MoodycamelCQPtr>(handle)->size_approx();
+    return reinterpret_cast<MoodycamelCQPtr>(handle)->size_approx();
 }
 
 }

c_api/concurrentqueue.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <stddef.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -26,7 +28,7 @@ MOODYCAMEL_EXPORT int moodycamel_cq_create(MoodycamelCQHandle* handle);
 MOODYCAMEL_EXPORT int moodycamel_cq_destroy(MoodycamelCQHandle handle);
 MOODYCAMEL_EXPORT int moodycamel_cq_enqueue(MoodycamelCQHandle handle, MoodycamelValue value);
 MOODYCAMEL_EXPORT int moodycamel_cq_try_dequeue(MoodycamelCQHandle handle, MoodycamelValue* value);
-MOODYCAMEL_EXPORT unsigned int moodycamel_cq_size_approx(MoodycamelCQHandle handle);
+MOODYCAMEL_EXPORT size_t moodycamel_cq_size_approx(MoodycamelCQHandle handle);
 
 MOODYCAMEL_EXPORT int moodycamel_bcq_create(MoodycamelBCQHandle* handle);
 MOODYCAMEL_EXPORT int moodycamel_bcq_destroy(MoodycamelBCQHandle handle);