SSL: fixed build by Sun C with old OpenSSL versions.

Sun C complains about "statement not reached" if a "return" is followed
by additional statements.

src/http/modules/ngx_http_grpc_module.c

@@ -4841,9 +4841,9 @@ ngx_http_grpc_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }
 
 

src/http/modules/ngx_http_proxy_module.c

@@ -4913,9 +4913,9 @@ ngx_http_proxy_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }
 
 

src/http/modules/ngx_http_ssl_module.c

@@ -1274,9 +1274,9 @@ ngx_http_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }
 
 

src/http/modules/ngx_http_uwsgi_module.c

@@ -2398,9 +2398,9 @@ ngx_http_uwsgi_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }
 
 

src/mail/ngx_mail_ssl_module.c

@@ -682,7 +682,7 @@ ngx_mail_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }

src/stream/ngx_stream_proxy_module.c

@@ -1026,9 +1026,9 @@ ngx_stream_proxy_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }
 
 

src/stream/ngx_stream_ssl_module.c

@@ -1061,9 +1061,9 @@ ngx_stream_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
 {
 #ifndef SSL_CONF_FLAG_FILE
     return "is not supported on this platform";
-#endif
-
+#else
     return NGX_CONF_OK;
+#endif
 }