Fix __attribute__((target(...))) usage.

The commonly supported way to specify multiple target options is to
surround the entire list with quotes and to use a comma (with no
extra spaces) as the delimiter.

Oversight in commit f78667bd91.

Discussion: https://postgr.es/m/Zy0jya8nF8CPpv3B%40nathan

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index 3a7332f8349..4b01b682b15 100755
--- a/configure
+++ b/configure
@@ -17324,7 +17324,7 @@ else
 /* end confdefs.h.  */
 #include <immintrin.h>
     #if defined(__has_attribute) && __has_attribute (target)
-    __attribute__((target("avx512vpopcntdq","avx512bw")))
+    __attribute__((target("avx512vpopcntdq,avx512bw")))
     #endif
     static int popcount_test(void)
     {