Style.

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 5163bee..12a82eb 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -4469,7 +4469,7 @@
    { (u_char *) "COPY",      (uint32_t) ~NGX_HTTP_COPY },
    { (u_char *) "MOVE",      (uint32_t) ~NGX_HTTP_MOVE },
    { (u_char *) "OPTIONS",   (uint32_t) ~NGX_HTTP_OPTIONS },
-   { (u_char *) "PROPFIND" , (uint32_t) ~NGX_HTTP_PROPFIND },
+   { (u_char *) "PROPFIND",  (uint32_t) ~NGX_HTTP_PROPFIND },
    { (u_char *) "PROPPATCH", (uint32_t) ~NGX_HTTP_PROPPATCH },
    { (u_char *) "LOCK",      (uint32_t) ~NGX_HTTP_LOCK },
    { (u_char *) "UNLOCK",    (uint32_t) ~NGX_HTTP_UNLOCK },

src/mail/ngx_mail.c

diff --git a/src/mail/ngx_mail.c b/src/mail/ngx_mail.c
index b0da786..350d2cd 100644
--- a/src/mail/ngx_mail.c
+++ b/src/mail/ngx_mail.c
@@ -465,7 +465,7 @@
         addrs[i].conf.ssl = addr[i].ssl;
 #endif
 
-        len = ngx_sock_ntop(addr[i].sockaddr, addr[i].socklen , buf,
+        len = ngx_sock_ntop(addr[i].sockaddr, addr[i].socklen, buf,
                             NGX_SOCKADDR_STRLEN, 1);
 
         p = ngx_pnalloc(cf->pool, len);

src/os/unix/ngx_process_cycle.c

diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
index 8ada106..9d23a73 100644
--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -536,7 +536,7 @@
         }
 
         ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
-                       "kill (%P, %d)" , ngx_processes[i].pid, signo);
+                       "kill (%P, %d)", ngx_processes[i].pid, signo);
 
         if (kill(ngx_processes[i].pid, signo) == -1) {
             err = ngx_errno;