Add a dll name to ogg.def.
According to VS2017 docs, the initial LIBRARY line must include
a dll name. MSVC handles the missing name, but MinGW does not.
Removing the line entirely is also accepted by both toolchains,
but is contrary to documentation.
Based on a patch by evpobr in https://github.com/xiph/ogg/pull/42
No ABI change according to comments there.
diff --git a/win32/ogg.def b/win32/ogg.def
index f88a434..030b644 100644
--- a/win32/ogg.def
+++ b/win32/ogg.def
@@ -2,7 +2,7 @@
; ogg.def
; List of exported functions for Windows builds.
;
-LIBRARY
+LIBRARY ogg
EXPORTS
;
oggpack_writeinit
