Don't try rustls on i686-pc-windows-msvc

It requires nasm to be installed, and I don't want to hassle with that
right now.

ci/run.sh

@@ -6,10 +6,15 @@ cargo test --target $TARGET --no-run
 # First test with no extra protocols enabled.
 cargo test --target $TARGET --no-run --features static-curl
 # Then with rustls TLS backend.
+#
 # Note: Cross-compiling rustls on windows doesn't work due to requiring some
 # NASM build stuff in aws_lc_rs, which may soon be fixed by
 # https://github.com/aws/aws-lc-rs/pull/528.
-if [ "$TARGET" != "x86_64-pc-windows-gnu" ]
+#
+# Compiling on i686-windows requires nasm to be installed (other platforms
+# have pre-compiled object files), which is just slightly too much
+# inconvenience for me.
+if [ "$TARGET" != "x86_64-pc-windows-gnu" ] && [ "$TARGET" != "i686-pc-windows-msvc" ]
 then
     cargo test --target $TARGET --no-run --features rustls,static-curl
 fi