Remove iconv_allocation_t.

	修改：     ChangeLog
	修改：     include/cppp/reiconv.hpp.in
	修改：     lib/iconv.cpp

Author: ChenPi11

ChangeLog

@@ -3,6 +3,7 @@
 	Finish NLS Translate language maps (en_US, zh_CN).
 	Add Doxygen notes for 'cppp/reiconv.hpp'.
 	Fix 'reiconv_version' bug (changed it to 2.0).
+	Remove 'iconv_allocation_t';
 
 2023-07-19  ChenPi11  <wushengwuxi-msctinoulk@outlook.com>
 

include/cppp/reiconv.hpp.in

@@ -87,15 +87,6 @@ extern "C++"
        */
       extern @DLL_VARIABLE@ int iconv_close (iconv_t cd);
 
-      // We will remove this typedef in the next commit, because function 'iconv_open_into was removed'.
-      /* A type that holds all memory needed by a conversion descriptor.
-         A pointer to such an object can be used as an iconv_t. */
-      typedef struct
-      {
-         void* dummy1[28];
-         mbstate_t dummy2;
-      } iconv_allocation_t;
-
       /**
        * @brief Control of attributes.
        * @param cd Conversion descriptor.

lib/iconv.cpp

@@ -270,17 +270,6 @@ namespace cppp{namespace base{namespace reiconv
     return 0;
   }
 
-  /*
-  * Verify that a 'struct conv_struct' and a 'struct wchar_conv_struct' each
-  * fit in an iconv_allocation_t.
-  * If this verification fails, iconv_allocation_t must be made larger and
-  * the major version in LIBICONV_VERSION_INFO must be bumped.
-  * Currently 'struct conv_struct' has 23 integer/pointer fields, and
-  * 'struct wchar_conv_struct' additionally has an 'mbstate_t' field.
-  */
-  typedef int verify_size_1[2 * (sizeof (struct conv_struct) <= sizeof (iconv_allocation_t)) - 1];
-  typedef int verify_size_2[2 * (sizeof (struct wchar_conv_struct) <= sizeof (iconv_allocation_t)) - 1];
-
   /* Bit mask of all valid surfaces. */
   #define ALL_SURFACES (ICONV_SURFACE_EBCDIC_ZOS_UNIX)