Snapshot harness test fix

before we were extracting the value for the symbol to be used as array size, but
the initialization to the extracted value is not guaranteed to happen before the
initialization of the array. So we do not extract the value from the snapshot at
all.

Author: petr-bauch

regression/snapshot-harness/pointer-to-array-function-parameters-multi-arg-right/test.desc

@@ -1,6 +1,6 @@
 CORE
 main.c
-first,second,string_size,prefix,prefix_size --harness-type initialise-with-memory-snapshot --initial-goto-location main:4 --havoc-variables prefix --size-of-array prefix:prefix_size --max-array-size 5
+first,second,string_size,prefix --harness-type initialise-with-memory-snapshot --initial-goto-location main:4 --havoc-variables prefix --size-of-array prefix:prefix_size --max-array-size 5
 ^SIGNAL=0$
 ^EXIT=0$
 VERIFICATION SUCCESSFUL