crt: Fix providing fseeko64 for arm msvcrt

Signed-off-by: Martin Storsjö <martin@martin.st>

mingw-w64-crt/def-include/crt-aliases.def.in

diff --git a/mingw-w64-crt/def-include/crt-aliases.def.in b/mingw-w64-crt/def-include/crt-aliases.def.in
index 1edb042..3c4f7c3 100644
--- a/mingw-w64-crt/def-include/crt-aliases.def.in
+++ b/mingw-w64-crt/def-include/crt-aliases.def.in
@@ -321,10 +321,11 @@
 #if defined(NO_FIXED_SIZE_64_ALIAS) && !defined(NO_FSTAT64_ALIAS)
 fstat64 == _fstat64
 #endif
+#ifdef WITH_FSEEKO64_ALIAS
+fseeko64 == _fseeki64
+#endif
 #else
 fstat64 == _fstat64
-#endif
-#ifndef FIXED_SIZE_SYMBOLS
 fseeko64 == _fseeki64
 ftello64 == _ftelli64
 #endif

mingw-w64-crt/lib-common/msvcrt.def.in

diff --git a/mingw-w64-crt/lib-common/msvcrt.def.in b/mingw-w64-crt/lib-common/msvcrt.def.in
index 1fa3ffc..7b90336 100644
--- a/mingw-w64-crt/lib-common/msvcrt.def.in
+++ b/mingw-w64-crt/lib-common/msvcrt.def.in
@@ -1930,5 +1930,6 @@
 #endif
 #if defined(__arm__) || defined(__aarch64__)
 #define USE_WCSTOK_S_FOR_WCSTOK
+#define WITH_FSEEKO64_ALIAS
 #endif
 #include "crt-aliases.def.in"