[LyX/master] Fix #10863 compiler warnings.

[Richard Heck]

commit b684ec39eaaf7d5b0270bf8109b8e281fa8c5d9f
Author: Richard Heck <rgh...@lyx.org>
Date:   Fri Dec 15 23:50:23 2017 -0500

    Fix #10863 compiler warnings.
---
 src/mathed/MathParser.cpp |   12 +++++-------
 1 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/mathed/MathParser.cpp b/src/mathed/MathParser.cpp
index 35062ca..c914a6a 100644
--- a/src/mathed/MathParser.cpp
+++ b/src/mathed/MathParser.cpp
@@ -744,7 +744,6 @@ docstring Parser::parse_verbatim_option()
        skipSpaces();
        docstring res;
        if (nextToken().character() == '[') {
-               Token t = getToken();
                for (Token t = getToken(); t.character() != ']' && good(); t = 
getToken()) {
                        if (t.cat() == catBegin) {
                                putback();
@@ -762,7 +761,6 @@ docstring Parser::parse_verbatim_item()
        skipSpaces();
        docstring res;
        if (nextToken().cat() == catBegin) {
-               Token t = getToken();
                for (Token t = getToken(); t.cat() != catEnd && good(); t = 
getToken()) {
                        if (t.cat() == catBegin) {
                                putback();
@@ -1037,10 +1035,10 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned 
flags,
                else if (t.cat() == catComment) {
                        docstring s;
                        while (good()) {
-                               Token const & t = getToken();
-                               if (t.cat() == catNewline)
+                               Token const & tt = getToken();
+                               if (tt.cat() == catNewline)
                                        break;
-                               s += t.asInput();
+                               s += tt.asInput();
                        }
                        cell->push_back(MathAtom(new InsetMathComment(buf, s)));
                        skipSpaces();
@@ -1774,7 +1772,7 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
                        docstring s;
                        int num_tokens = 0;
                        while (true) {
-                               Token const & t = getToken();
+                               Token const & tt = getToken();
                                ++num_tokens;
                                if (!good()) {
                                        s.clear();
@@ -1782,7 +1780,7 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
                                                putback();
                                        break;
                                }
-                               s += t.character();
+                               s += tt.character();
                                if (isValidLength(to_utf8(s)))
                                        break;
                        }