cmake: add missing Bcrypt link on Windows

When building on Windows, we must link against `Bcrypt` to satisfy the
use of `BCryptGenRandom`. Add this to the link interface in CMake to
allow use of libxml2 as a static library.

Author: compnerd

libxml2-config.cmake.cmake.in

@@ -157,7 +157,7 @@ if(NOT LIBXML2_SHARED)
   endif()
 
   if(WIN32)
-    list(APPEND LIBXML2_LIBRARIES ws2_32)
+    list(APPEND LIBXML2_LIBRARIES ws2_32;Bcrypt)
   endif()
 endif()
 

libxml2-config.cmake.in

@@ -113,8 +113,8 @@ if(UNIX)
 endif()
 
 if(WIN32)
-  list(APPEND LIBXML2_LIBRARIES    ws2_32)
-  list(APPEND LIBXML2_INTERFACE_LINK_LIBRARIES "\$<LINK_ONLY:ws2_32>")
+  list(APPEND LIBXML2_LIBRARIES    ws2_32;Bcrypt)
+  list(APPEND LIBXML2_INTERFACE_LINK_LIBRARIES "\$<LINK_ONLY:ws2_32>;\$<LINK_ONLY:Bcrypt>")
 endif()
 
 # whether libxml2 has dso support