reduce c compilation errors

to get towards compilation (still not running). remaining errors are due
to infix_HashCode:

cc -O3 -w query_t5hc.check.c
query_t5hc.check.c:39:23: error: expected identifier
    int64_t x30 = x22.##;
                      ^
query_t5hc.check.c:81:23: error: expected identifier
    int64_t x70 = x67.##;
                      ^
2 errors generated.