priv: Fix brackets of burn macros.

include/libssh/priv.h

@@ -254,7 +254,7 @@ int match_hostname(const char *host, const char *pattern, unsigned int len);
 /** Overwrite the buffer with '\0' */
 # define BURN_BUFFER(x, size) do { \
     if ((x) != NULL) \
-        memset((x), '\0', (size))); __asm__ volatile("" : : "r"(&(x)) : "memory"); \
+        memset((x), '\0', (size)); __asm__ volatile("" : : "r"(&(x)) : "memory"); \
   } while(0)
 #else /* HAVE_GCC_VOLATILE_MEMORY_PROTECTION */
 /** Overwrite a string with '\0' */
@@ -265,7 +265,7 @@ int match_hostname(const char *host, const char *pattern, unsigned int len);
 /** Overwrite the buffer with '\0' */
 # define BURN_BUFFER(x, size) do { \
     if ((x) != NULL) \
-        memset((x), '\0', (size))); __asm__ volatile("" : : "r"(&(x)) : "memory"); \
+        memset((x), '\0', (size)); __asm__ volatile("" : : "r"(&(x)) : "memory"); \
   } while(0)
 #endif /* HAVE_GCC_VOLATILE_MEMORY_PROTECTION */