parameters of Linear should be swapped

[vineetk1]

File: https://github.com/pytorch/fairseq/blob/master/fairseq/models/lstm.py
Seems that in Line 269
self.input_proj = Linear(input_embed_dim, output_embed_dim, bias=False)
the parameters input_embed_dim and output_embed_dim should be swapped as follows:
self.input_proj = Linear(output_embed_dim, input_embed_dim, bias=False)

If Line 269 is not changed then Lines 277 and 280:
x = self.input_proj(input)
attn_scores = (source_hids * x.unsqueeze(0)).sum(dim=2)
should be replaced with the following two lines:
source_hids = self.input_proj(source_hids)
attn_scores = (source_hids * input.unsqueeze(0)).sum(dim=2)