devel/nspr: update to 4.30.

Merges bits of our patch in #1674381, should still build on exotic archs.

devel/nspr/Makefile

@@ -1,8 +1,8 @@
-# $OpenBSD: Makefile,v 1.84 2020/09/21 13:50:18 landry Exp $
+# $OpenBSD: Makefile,v 1.85 2021/03/17 18:36:57 landry Exp $
 
 COMMENT =		Netscape Portable Runtime
 
-VER=			4.29
+VER=			4.30
 DISTNAME=		nspr-${VER}
 
 SO_VERSION=		24.0

devel/nspr/distinfo

@@ -1,2 +1,2 @@
-SHA256 (nspr-4.29.tar.gz) = Iihr24BZ10YyzHwoZcE55jlT7Pszv0Niq1iCfobpJYI=
-SIZE (nspr-4.29.tar.gz) = 1078192
+SHA256 (nspr-4.30.tar.gz) = jUzY+ECUhNxMPTHhgDVL/FBlc+zPhs1pEQah737ckTs=
+SIZE (nspr-4.30.tar.gz) = 1078175

devel/nspr/patches/patch-nspr_pr_include_md__openbsd_h

@@ -1,14 +1,10 @@
-$OpenBSD: patch-nspr_pr_include_md__openbsd_h,v 1.3 2019/10/23 19:28:36 landry Exp $
+$OpenBSD: patch-nspr_pr_include_md__openbsd_h,v 1.4 2021/03/17 18:36:57 landry Exp $
 
 Index: nspr/pr/include/md/_openbsd.h
 --- nspr/pr/include/md/_openbsd.h.orig
 +++ nspr/pr/include/md/_openbsd.h
-@@ -22,8 +22,14 @@
- #define _PR_SI_ARCHITECTURE "powerpc"
- #elif defined(__sparc__)
+@@ -26,6 +26,10 @@
  #define _PR_SI_ARCHITECTURE "sparc"
-+#elif defined(__aarch64__)
-+#define _PR_SI_ARCHITECTURE "aarch64"
  #elif defined(__arm__)
  #define _PR_SI_ARCHITECTURE "arm"
 +#elif defined(__hppa__)
@@ -18,7 +14,7 @@ Index: nspr/pr/include/md/_openbsd.h
  #endif
  
  #define PR_DLL_SUFFIX       ".so"
-@@ -33,7 +39,11 @@
+@@ -35,7 +39,11 @@
  #define _MD_DEFAULT_STACK_SIZE  65536L
  #define _MD_MMAP_FLAGS          MAP_PRIVATE
  
@@ -30,7 +26,7 @@ Index: nspr/pr/include/md/_openbsd.h
  #define HAVE_DLL
  #define USE_DLFCN
  #define _PR_HAVE_SOCKADDR_LEN
-@@ -67,8 +77,10 @@
+@@ -69,8 +77,10 @@
  #define JB_SP_INDEX 34
  #elif defined(__amd64__)
  #define JB_SP_INDEX 6