[gcalctool] Only auto-strip thousand separators if in a number

[Robin Sonefors <rsonefors src gnome org>]

commit 840020d94df93cf2f01229ca0c79e0ece8f37174
Author: Robin Sonefors <ozamosi flukkost nu>
Date:   Sat Jan 15 16:42:37 2011 +0100

    Only auto-strip thousand separators if in a number
    
    Closes bug #633174

 src/math-equation.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/math-equation.c b/src/math-equation.c
index 2b87989..252d4c7 100644
--- a/src/math-equation.c
+++ b/src/math-equation.c
@@ -266,7 +266,7 @@ reformat_separators(MathEquation *equation)
         }
         else if (c == mp_serializer_get_thousands_separator(equation->priv->serializer)) {
             /* Didn't expect thousands separator - delete it */
-            if (!expect_tsep) {
+            if (!expect_tsep && in_number) {
                 GtkTextIter start, end;
                 gtk_text_buffer_get_iter_at_offset(GTK_TEXT_BUFFER(equation), &start, offset);
                 gtk_text_buffer_get_iter_at_offset(GTK_TEXT_BUFFER(equation), &end, offset + 1);