fix c-ares build

grpc.gemspec

@@ -3032,7 +3032,6 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/cares/cares/include/ares_nameser.h )
   s.files += %w( third_party/cares/cares/include/ares_rules.h )
   s.files += %w( third_party/cares/cares/include/ares_version.h )
-  s.files += %w( third_party/cares/cares/src/config-dos.h )
   s.files += %w( third_party/cares/cares/src/config-win32.h )
   s.files += %w( third_party/cares/cares/src/lib/ares__addrinfo2hostent.c )
   s.files += %w( third_party/cares/cares/src/lib/ares__addrinfo_localhost.c )
@@ -3107,6 +3106,7 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/cares/cares/src/lib/ares_writev.h )
   s.files += %w( third_party/cares/cares/src/lib/bitncmp.c )
   s.files += %w( third_party/cares/cares/src/lib/bitncmp.h )
+  s.files += %w( third_party/cares/cares/src/lib/config-dos.h )
   s.files += %w( third_party/cares/cares/src/lib/inet_net_pton.c )
   s.files += %w( third_party/cares/cares/src/lib/inet_ntop.c )
   s.files += %w( third_party/cares/cares/src/lib/setup_once.h )

src/c-ares/gen_build_yaml.py

@@ -132,7 +132,7 @@ try:
                 "third_party/cares/cares/src/lib/ares_llist.h",
                 "third_party/cares/cares/src/lib/ares_platform.h",
                 "third_party/cares/cares/src/lib/ares_ipv6.h",
-                "third_party/cares/cares/src/config-dos.h",
+                "third_party/cares/cares/src/lib/config-dos.h",
                 "third_party/cares/cares/src/lib/bitncmp.h",
                 "third_party/cares/cares/src/lib/ares_strcasecmp.h",
                 "third_party/cares/cares/src/lib/setup_once.h",

third_party/cares/cares.BUILD

@@ -209,7 +209,7 @@ cc_library(
         "src/lib/ares_llist.h",
         "src/lib/ares_platform.h",
         "src/lib/ares_ipv6.h",
-        "src/config-dos.h",
+        "src/lib/config-dos.h",
         "src/lib/bitncmp.h",
         "src/lib/ares_strcasecmp.h",
         "src/lib/setup_once.h",