[win32] change all 'sp' to 'SP' in code and in the docs. Explicitly

mention that local stack pointer should be called SP.  This makes the
API safer from source incompatibilities down the line.

p4raw-id: //depot/win32/perl@795

1 files changed, 1 insertions, 1 deletions

diff --git a/gv.c b/gv.c
index 128d790492..9948b126fd 100644
--- a/gv.c
+++ b/gv.c
@@ -1319,7 +1319,7 @@ amagic_call(SV *left, SV *right, int method, int flags)
     PUTBACK;
     pp_pushmark(ARGS);
 
-    EXTEND(sp, notfound + 5);
+    EXTEND(SP, notfound + 5);
     PUSHs(lr>0? right: left);
     PUSHs(lr>0? left: right);
     PUSHs( lr > 0 ? &sv_yes : ( assign ? &sv_undef : &sv_no ));