Enable portable build by disabling OPTFLAGS. It could cause errors.

See rhbz2329849
Reoslves: RHEL-73444

postgresql16-pgvector.spec

@@ -12,7 +12,7 @@
 
 Name:		postgresql%{pgversion}-%{sname}
 Version:	0.6.2
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	Open-source vector similarity search for Postgres
 License:	PostgreSQL
 URL:		https://github.com/%{sname}/%{sname}/
@@ -63,7 +63,7 @@ This packages provides JIT support for pgvector
 %setup -q -n %{sname}-%{version}
 
 %build
-%make_build %{?_smp_mflags}
+%make_build %{?_smp_mflags} OPTFLAGS=""
 
 %install
 %make_install
@@ -84,6 +84,10 @@ This packages provides JIT support for pgvector
 %endif
 
 %changelog
+* Mon Jan 20 2025 Filip Janus <fjanus@redhat.com> - 0.6.2-3
+- Enable Portable build
+- Resolves: RHEL-73444
+
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 0.6.2-2
 - Bump release for October 2024 mass rebuild:
   Resolves: RHEL-64018