Ensure LXC/QEMU APIs set the filename for errors

The virLibConnError macros in libvirt-lxc.c and
libvirt-qemu.c were passing NULL for the filename.
This causes a crash if the logging code is configured
to use journald.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

src/libvirt-lxc.c

@@ -35,12 +35,12 @@
 
 #define VIR_FROM_THIS VIR_FROM_NONE
 
-#define virLibConnError(conn, error, info)                               \
-    virReportErrorHelper(VIR_FROM_NONE, error, NULL, __FUNCTION__,       \
+#define virLibConnError(conn, error, info)                              \
+    virReportErrorHelper(VIR_FROM_NONE, error, __FILE__, __FUNCTION__,  \
                          __LINE__, info)
 
 #define virLibDomainError(domain, error, info)                          \
-    virReportErrorHelper(VIR_FROM_DOM, error, NULL, __FUNCTION__,       \
+    virReportErrorHelper(VIR_FROM_DOM, error, __FILE__, __FUNCTION__,   \
                          __LINE__, info)
 
 /**

src/libvirt-qemu.c

@@ -29,12 +29,12 @@
 
 #define VIR_FROM_THIS VIR_FROM_NONE
 
-#define virLibConnError(conn, error, info)                               \
-    virReportErrorHelper(VIR_FROM_NONE, error, NULL, __FUNCTION__,       \
+#define virLibConnError(conn, error, info)                              \
+    virReportErrorHelper(VIR_FROM_NONE, error, __FILE__, __FUNCTION__,  \
                          __LINE__, info)
 
 #define virLibDomainError(domain, error, info)                          \
-    virReportErrorHelper(VIR_FROM_DOM, error, NULL, __FUNCTION__,       \
+    virReportErrorHelper(VIR_FROM_DOM, error, __FILE__, __FUNCTION__,   \
                          __LINE__, info)
 
 /**