src: Windows compile fixes

src/common.h

@@ -27,6 +27,7 @@ namespace {
                        result,
                        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                        (LPTSTR) &lpMsgBuf,
+                       1,
                        NULL);
         snprintf(msg,
                  ERR_MSG_MAX_LEN,
@@ -34,6 +35,8 @@ namespace {
                  method,
                  lpMsgBuf,
                  result);
+
+        LocalFree(lpMsgBuf);
 #else
         snprintf(msg,
                  ERR_MSG_MAX_LEN,

src/pcsclite.cpp

@@ -43,7 +43,7 @@ PCSCLite::PCSCLite(): m_card_context(0),
                                       1);
 
         if ((result != SCARD_S_SUCCESS) && (result != SCARD_E_TIMEOUT)) {
-            NanThrowError(pcsc_stringify_error(result));
+            NanThrowError(error_msg("SCardGetStatusChange", result).c_str());
         } else {
             m_pnp = !(m_card_reader_state.dwEventState & SCARD_STATE_UNKNOWN);
         }