Fix include and broken line

Author: GlushkovNikita

src/csnip/x/clock_gettime.c

@@ -1,4 +1,5 @@
 #include <time.h>
+#include <errno.h>
 
 #include <csnip/csnip_conf.h>
 #include <csnip/x.h>
@@ -20,7 +21,7 @@ int x_csnip_clock_gettime_imp(csnip_x_clockid_t clk_id,
 
 		/* Didn't succeed;  we don't really know why not... */
 		errno = EINVAL;
-		return -1
+		return -1;
 	}
 
 	/* Wrong clk_id */