Fuzzing: Ignore differences in names that wasm2js fixes up (#7200)

wasm2js renames exports to js-valid names. That difference can be noticeable
when we compare it to the original names, so fix that up.

This is needed for #7198: that PR adds more invokes, including invokes of
imports, whose names can be modified by wasm2js.

Author: kripken

scripts/fuzz_opt.py

@@ -1086,6 +1086,10 @@ def fix_output_for_js(x):
             # fuzzer can notice.
             x = re.sub(r' null', ' 0', x)
 
+            # wasm2js converts exports to valid JS forms, which affects some of
+            # the names in the test suite. Fix those up.
+            x = x.replace('log-', 'log_')
+
             # check if a number is 0 or a subnormal, which is basically zero
             def is_basically_zero(x):
                 # to check if something is a subnormal, compare it to the largest one