suggestion: c2m should not report an error, when the last line is not a newline

[lydiandy]

Here is the example code: It will report an error:

ln 39: endmodule should have no params
ln 39: absent endmodule

After add a new line, It can run with：c2m sieve.v -eg.

I think the c2m should deal with the new line. It is good to newer of MIR.

m_sieve:  module
          export sieve
sieve:    func i32, i32:N
          local i64:iter, i64:count, i64:i, i64:k, i64:prime, i64:temp, i64:flags
          alloca flags, 819000
          mov iter, 0
loop:     bge fin, iter, N
          mov count, 0;  mov i, 0
loop2:    bge fin2, i, 819000
          mov u8:(flags, i), 1;  add i, i, 1
          jmp loop2
fin2:     mov i, 0
loop3:    bge fin3, i, 819000
          beq cont3, u8:(flags,i), 0
          add temp, i, i;  add prime, temp, 3;  add k, i, prime
loop4:    bge fin4, k, 819000
          mov u8:(flags, k), 0;  add k, k, prime
          jmp loop4
fin4:     add count, count, 1
cont3:    add i, i, 1
          jmp loop3
fin3:     add iter, iter, 1
          jmp loop
fin:      ret count
          endfunc
          endmodule
          
m_ex100:  module
format:   string "sieve (10) = %d\n"
p_printf: proto p:fmt, i32:v
p_sieve:  proto i32, i32:iter
          export ex100
          import sieve, printf
main:    func
          local i64:r
          call p_sieve, sieve, r, 100
          call p_printf, printf, format, r
          endfunc
          endmodule  #without new line