tc-i386.c fix for oss-fuzz gas fuzzing

[Alan Modra]

oss-fuzz fuzz_as is seriously broken with respect to gas static
variables, so much so that most fuzz_as reports should simply be
ignored.  This patch is a fix for
https://oss-fuzz.com/testcase-detail/6268463220654080

	* config/tc-i386.c (i386_md_end): Clear GOT_symbol.

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 62058f7e993..538e3fb06ad 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -3612,6 +3612,7 @@ i386_md_end (void)
 {
   htab_delete (op_hash);
   htab_delete (reg_hash);
+  GOT_symbol = NULL;
 }
 
 #ifdef DEBUG386

-- 
Alan Modra