Removed unintentional trailing spaces in non-external and non-generated C files.
diff --git a/Modules/_io/bufferedio.c b/Modules/_io/bufferedio.c
index 370bb5e..358a94d 100644
--- a/Modules/_io/bufferedio.c
+++ b/Modules/_io/bufferedio.c
@@ -1055,7 +1055,7 @@
         }
         else
             n = 0;
-        
+
         if (n == 0 || (n == -2 && written > 0))
             break;
         if (n < 0) {
@@ -1065,7 +1065,7 @@
             }
             goto end;
         }
-        
+
         /* At most one read in readinto1 mode */
         if (readinto1) {
             written += n;