"Non-var in fun position" error when substituting `coin` dynref

[sirlensalot]

To reproduce:

pact> (load "root/coin.pact")
"Loading root/coin.pact..."
<interactive>:1:0: Cannot resolve "fungible-v2.account-details"
 at : module
pact> (load "root/fungible-v2.pact")
"Loading root/fungible-v2.pact..."
"Loaded interface fungible-v2"
pact> (load "root/coin.pact")
"Loading root/coin.pact..."
"Loaded module coin, hash 3eziVWts1RzJW3YkHEMVIeIgNNS1lgv6_peqzkAQ0ns"
"TableCreated"
"TableCreated"
pact> (env-dynref fungible-v2 coin)
"Added dynamic ref to environment."
pact> (module foo g (defcap g () true))
"Loaded module foo, hash uxkjQKWoqLR7W4-yGMUltMuKnsI2asw7TtYOIJUX9s4"
pact> (verify 'foo)
<interactive>:1:0: : Non-var in fun position 

[sirlensalot]

Fixed by #1120