Add extern "C" to module.h (#2150)

JerryScript-DCO-1.0-Signed-off-by: Greg Miell greg@gothack.ninja

jerry-ext/include/jerryscript-ext/module.h

@@ -18,6 +18,11 @@
 
 #include "jerryscript.h"
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
 /**
  * Declare the signature for the module initialization function.
  */
@@ -129,4 +134,7 @@ jerry_value_t jerryx_module_resolve (const jerry_value_t name,
                                      const jerryx_module_resolver_t **resolvers,
                                      size_t count);
 
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
 #endif /* !JERRYX_MODULE_H */