Add test for checking if WS2_32.dll is linked

Author: CDirkx

src/test/run-make/issue-85441/Makefile

@@ -0,0 +1,9 @@
+# only-windows
+
+-include ../../run-make-fulldeps/tools.mk
+
+# Tests that WS2_32.dll is not unnecessarily linked, see issue #85441
+
+all:
+	$(RUSTC) empty.rs
+	objdump -p $(TMPDIR)/empty.exe | $(CGREP) -v -i "WS2_32.dll"

src/test/run-make/issue-85441/empty.rs

@@ -0,0 +1 @@
+fn main() {}