x86/null_breakpoint: Remove trailing space from log message

Currently, the log message contains an unwanted trailing space, so
remove it.

    [ERROR]  Null dereference at eip: 0x3ffad01a

Change-Id: I64509ca4bad94c7db4279cc4c1e6fee2bba2e035
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64799
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
diff --git a/src/arch/x86/null_breakpoint.c b/src/arch/x86/null_breakpoint.c
index dbb54ae..4da6d87 100644
--- a/src/arch/x86/null_breakpoint.c
+++ b/src/arch/x86/null_breakpoint.c
@@ -17,9 +17,9 @@
 static int handle_deref_breakpoint(struct breakpoint_handle handle, struct eregs *regs)
 {
 #if ENV_X86_64
-	printk(BIOS_ERR, "Null dereference at rip: 0x%llx \n", regs->rip);
+	printk(BIOS_ERR, "Null dereference at rip: 0x%llx\n", regs->rip);
 #else
-	printk(BIOS_ERR, "Null dereference at eip: 0x%x \n", regs->eip);
+	printk(BIOS_ERR, "Null dereference at eip: 0x%x\n", regs->eip);
 #endif
 	return CONFIG(DEBUG_NULL_DEREF_HALT);
 }