work on fuzzing makefile; commit corpus

fuzz/corpus/739b539db05f50e2e9a947f9ed9fc1ec66f15f5c

@@ -0,0 +1,12 @@
+// comment
+# comlse
+  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 => v }
+  for4   = [ for v in var.list : v ]
+  for5   = { for v ttr6 = 2.112E-12
+    attr7 = 0x21FF
+  }
+}