Add --show-error-list=yes to valgrind options. Invalid opcode again!

To run "make memcheck", uncomment Makefile line 36 (-m no-tbm).
Without this, I get :
vex amd64->IR: unhandled instruction bytes: 0x8F 0xEA 0xF8 0x10 0xFF 0x23 0x1D 0x0 0x0 0x89
vex amd64->IR:   REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0
vex amd64->IR:   VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=NONE
vex amd64->IR:   PFX.66=0 PFX.F2=0 PFX.F3=0
==888233== valgrind: Unrecognised instruction at address 0x109336.

2019/day04/Makefile

@@ -41,7 +41,8 @@ CFLAGS  += -DDEBUG_DEBUG 	# activate general debug (debug.c)
 CFLAGS  += -DDEBUG_POOL		# memory pools management
 
 VALGRIND := valgrind
-VALGRINDFLAGS := -q -s --leak-check=full --show-leak-kinds=all --track-origins=yes
+VALGRINDFLAGS := --leak-check=full --show-leak-kinds=all --track-origins=yes \
+	--sigill-diagnostics=yes --quiet --show-error-list=yes
 
 
 TIME    := \time -f "\ttime: %E real, %U user, %S sys\n\tcontext-switch:\t%c+%w, page-faults: %F+%R\n"

2019/day04/aoc-c.c

@@ -34,16 +34,12 @@ static int is_valid(int number, int part)
             dups[digit] += 2;
         }
     }
-    if (!valid)
-        return 0;
-    if (part == 2) {
-        valid = 0;
-        for (int i = 0; i < 10; ++i) {
+    if (!valid || part == 1)
+        return valid;
+    for (int i = 0; i < 10; ++i)
         if (dups[i] == 2)
             return 1;
-        }
-    }
-    return valid;
+    return 0;
 }
 
 static int doit(int *nums, int part)