work on fuzzing makefile; commit corpus

fuzz/corpus/ed6d44a4e804faa0b0720a60742e0ad24334f04c

@@ -0,0 +1,21 @@
+// comment { foo = "baz" }
+  null1  = null
+  boolr = t1 ue
+  bool2  = false
+  splat1 = tuple.*.foo.bar[0]
+  splat2 = tuple[*].foo.bar[0]
+  for1   = { for i, v in ["a", "a", "b"] : v => i... }
+  for2   = [ for k, v in var.map : "${k}-${v}" ]
+  for3   = { for k, v in var.map : k =>// comment
+# comment
+/*
+    comment
+*/
+
+reso&al1"
+  tupl1  = [ 1// comment
+#? , ÎÏ 3.4, v }
+  for4   = [ for v in var.list : v ]
+  for5 "foo   = { for v in var.list : v => v }
+  for6   = [ f" ]
+ or v in var.list : v i tfu