avoid multiple definitions of an external var

There's a missing "extern" symbol, causing build issues with
newer toolchains.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

rasdaemon-avoid-multiple-definitions.patch

@@ -0,0 +1,24 @@
+commit fd982af0a307edc5d3e56011d2e045015b1efd4b
+Author: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+Date:   Mon Mar 30 01:22:24 2020 +0200
+
+    ras-record.h: define an external var as such
+    
+    Otherwise, newer versions of gcc will produce multiple symbols,
+    causing link breakages.
+    
+    Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+
+diff --git a/ras-record.h b/ras-record.h
+index 5311c67caf44..0d2a481c23dd 100644
+--- a/ras-record.h
++++ b/ras-record.h
+@@ -25,7 +25,7 @@
+ 
+ extern long user_hz;
+ 
+-struct ras_events *ras;
++extern struct ras_events *ras;
+ 
+ struct ras_mc_event {
+ 	char timestamp[64];

rasdaemon.spec

@@ -5,6 +5,7 @@ Summary:		Utility to receive RAS error tracings
 License:		GPLv2
 URL:			http://git.infradead.org/users/mchehab/rasdaemon.git
 Source0:		http://www.infradead.org/~mchehab/rasdaemon/%{name}-%{version}.tar.bz2
+Patch0:			rasdaemon-avoid-multiple-definitions.patch
 
 ExcludeArch:		s390 s390x
 BuildRequires:		gcc
@@ -35,6 +36,7 @@ an utility for reporting current error counts from the EDAC sysfs files.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 %ifarch %{arm} aarch64