ddb: clean up empty lines in .c and .h files

sys/ddb/db_break.c

@@ -178,7 +178,6 @@ db_set_breakpoints(void)
 	register db_breakpoint_t	bkpt;
 
 	if (!db_breakpoints_inserted) {
-
 		for (bkpt = db_breakpoint_list;
 		     bkpt != 0;
 		     bkpt = bkpt->link)
@@ -195,7 +194,6 @@ db_clear_breakpoints(void)
 	register db_breakpoint_t	bkpt;
 
 	if (db_breakpoints_inserted) {
-
 		for (bkpt = db_breakpoint_list;
 		     bkpt != 0;
 		     bkpt = bkpt->link)

sys/ddb/db_output.c

@@ -124,11 +124,9 @@ db_putchar(int c, void *arg)
 	struct dbputchar_arg *dap = arg;
 
 	if (dap->da_pbufr == NULL) {
-
 		 /* No bufferized output is provided. */
 		db_putc(c);
 	} else {
-
 		*dap->da_pnext++ = c;
 		dap->da_remain--;
 

sys/ddb/db_ps.c

@@ -266,7 +266,7 @@ dumpthread(volatile struct proc *p, volatile struct thread *td, int all)
 	char state[9], wprefix;
 	const char *wmesg;
 	const void *wchan;
-	
+
 	if (all) {
 		db_printf("%6d                  ", td->td_tid);
 		switch (td->td_state) {

sys/ddb/db_sym.c

@@ -205,7 +205,6 @@ db_qualify(c_db_sym_t sym, char *symtabname)
 	return tmp;
 }
 
-
 bool
 db_eqname(const char *src, const char *dst, int c)
 {
@@ -408,7 +407,6 @@ db_symbol_values(c_db_sym_t sym, const char **namep, db_expr_t *valuep)
 		*valuep = value;
 }
 
-
 /*
  * Print a the closest symbol to value
  *

sys/ddb/db_watch.c

@@ -277,8 +277,6 @@ db_find_watchpoint(vm_map_t map, db_addr_t addr, db_regs_t regs)
 }
 #endif
 
-
-
 /* Delete hardware watchpoint */
 /*ARGSUSED*/
 void

sys/ddb/db_write_cmd.c

@@ -90,4 +90,3 @@ db_write_cmd(db_expr_t address, bool have_addr, db_expr_t count,
 
 	db_skip_to_eol();
 }
-