fix: use CURDIR for Zoekt build output in Makefile (#1096)

The shell variable PWD is not set by GNU Make and is often empty on Windows, which broke go build -o paths. Use Make built-in CURDIR instead.

Fixes #1095

Author: h30s

Makefile

@@ -9,8 +9,8 @@ yarn:
 
 zoekt:
 	mkdir -p bin
-	go build -C vendor/zoekt -o $(PWD)/bin ./cmd/...
-	export PATH="$(PWD)/bin:$(PATH)"
+	go build -C vendor/zoekt -o $(CURDIR)/bin ./cmd/...
+	export PATH="$(CURDIR)/bin:$(PATH)"
 	export CTAGS_COMMANDS=ctags
 
 clean: