vim-patch:8.0.1041: bogus characters when indenting during visual-block append

Problem:    Bogus characters appear when indenting kicks in while doing a
            visual-block append.
Solution:   Recompute when indenting is done. (Christian Brabandt)
e2e69e4813

src/nvim/charset.c

@@ -30,7 +30,7 @@
 #include "nvim/state.h"
 #include "nvim/strings.h"
 #include "nvim/path.h"
-
+#include "nvim/cursor.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "charset.c.generated.h"
@@ -1465,6 +1465,18 @@ char_u *skipwhite(const char_u *q)
   return (char_u *)p;
 }
 
+// getwhitecols: return the number of whitespace
+// columns (bytes) at the start of a given line
+intptr_t getwhitecols_curline(void)
+{
+  return getwhitecols(get_cursor_line_ptr());
+}
+
+intptr_t getwhitecols(const char_u *p)
+{
+  return skipwhite(p) - p;
+}
+
 /// Skip over digits
 ///
 /// @param[in]  q  String to skip digits in.