dvbpsi: fix the dvb_desc_service() fcn - stack corruption (clang sani…

…tizer)

Makefile

@@ -28,7 +28,7 @@ LANGUAGES ?= bg cs da de en_US en_GB es et fa fi fr he hr hu it lv nl pl pt ru s
 # Common compiler flags
 #
 
-CFLAGS  += -g -O2 -fPIE
+CFLAGS  += -g -O0 -fPIE
 ifeq ($(CONFIG_PIE),yes)
 CFLAGS  += -fPIE
 else

src/input/mpegts/dvb_psi.c

@@ -418,14 +418,13 @@ dvb_desc_service
 
   /* Cleanup name */
   str = sname;
-  while (*str && *str <= 32)
+  while (*str && *str <= ' ')
     str++;
-  memmove(sname, str, sname_len); // Note: could avoid this copy by passing an output ptr
-  l   = strlen(str);
-  while (l > 1 && str[l-1] <= 32) {
-    str[l-1] = 0;
-    l--;
-  }
+  if (str != sname)
+    memmove(sname, str, sname_len - (str - sname));
+  l = strlen(str);
+  while (l > 1 && str[l-1] <= ' ')
+    str[--l] = '\0';
 
   return 0;
 }