Mps br/timing (fix warnings "... may be used uninitialized"):

trace.c, tract.c: initialise variable to NULL

Copied from Perforce
 Change: 167191
 ServerID: perforce.ravenbrook.com

2 files changed, 2 insertions, 2 deletions

diff --git a/mps/code/trace.c b/mps/code/trace.c
index c5f0c4dd0f4..3958232dfec 100644
--- a/mps/code/trace.c
+++ b/mps/code/trace.c
@@ -1720,7 +1720,7 @@ void TraceQuantum(Trace trace)
 
 Res TraceStartCollectAll(Trace *traceReturn, Arena arena, int why)
 {
-  Trace trace;
+  Trace trace = NULL;
   Res res;
   double finishingTime;
 
diff --git a/mps/code/tract.c b/mps/code/tract.c
index 0bfb03e419d..7f8f58e788b 100644
--- a/mps/code/tract.c
+++ b/mps/code/tract.c
@@ -441,7 +441,7 @@ Bool TractOfAddr(Tract *tractReturn, Arena arena, Addr addr)
 
 Tract TractOfBaseAddr(Arena arena, Addr addr)
 {
-  Tract tract;
+  Tract tract = NULL;
   Bool found;
 
   AVERT_CRITICAL(Arena, arena);