android/support: Fix typo in iconv.h

http://b.android.com/63806

Change-Id: Ic43078a99ac018650a5fa2f1fdacb0c7f91f5302
diff --git a/sources/android/support/include/iconv.h b/sources/android/support/include/iconv.h
index 3a67d95..0796888 100644
--- a/sources/android/support/include/iconv.h
+++ b/sources/android/support/include/iconv.h
@@ -40,7 +40,7 @@
 size_t  iconv(iconv_t, char**, size_t*, char**, size_t*);
 int     iconv_close(iconv_t);
 
-#ifdef __cplus_plus
+#ifdef __cplusplus
 }  // extern "C"
 #endif