swresample/resample_template: Add () to protect the arguments of the OUT() macro

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libswresample/resample_template.c

@@ -52,8 +52,8 @@
 #    define FELEM2 int64_t
 #    define FELEM_MAX INT32_MAX
 #    define FELEM_MIN INT32_MIN
-#    define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
-                      d = (uint64_t)(v + 0x80000000) > 0xFFFFFFFF ? (v>>63) ^ 0x7FFFFFFF : v
+#    define OUT(d, v) (v) = ((v) + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
+                      (d) = (uint64_t)((v) + 0x80000000) > 0xFFFFFFFF ? ((v)>>63) ^ 0x7FFFFFFF : (v)
 
 #elif    defined(TEMPLATE_RESAMPLE_S16)
 
@@ -65,8 +65,8 @@
 #    define FELEML int64_t
 #    define FELEM_MAX INT16_MAX
 #    define FELEM_MIN INT16_MIN
-#    define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
-                      d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v
+#    define OUT(d, v) (v) = ((v) + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
+                      (d) = (unsigned)((v) + 32768) > 65535 ? ((v)>>31) ^ 32767 : (v)
 
 #endif