cleanup: fix cppcheck unusedVariable code smells

src/libespeak-ng/compiledata.c

@@ -1207,13 +1207,13 @@ static int LoadWavefile(FILE *f, const char *fname)
 	fseek(f, 40, SEEK_SET);
 
 	if ((sr1 != samplerate_native) || (sr2 != sr1*2)) {
-		int fd_temp;
 		char command[sizeof(path_home)+250];
 
 		failed = false;
 
 #ifdef HAVE_MKSTEMP
 		strcpy(fname_temp, "/tmp/espeakXXXXXX");
+		int fd_temp;
 		if ((fd_temp = mkstemp(fname_temp)) >= 0)
 			close(fd_temp);
 #else

src/libespeak-ng/soundicon.c

@@ -72,7 +72,6 @@ static espeak_ng_STATUS LoadSoundFile(const char *fname, int index, espeak_ng_ER
 	f = NULL;
 	if ((f = fopen(fname, "rb")) != NULL) {
 		int ix;
-		int fd_temp;
 		int header[3];
 		char command[sizeof(fname2)+sizeof(fname2)+40];
 
@@ -92,6 +91,7 @@ static espeak_ng_STATUS LoadSoundFile(const char *fname, int index, espeak_ng_ER
 
 #ifdef HAVE_MKSTEMP
 			strcpy(fname_temp, "/tmp/espeakXXXXXX");
+			int fd_temp;
 			if ((fd_temp = mkstemp(fname_temp)) >= 0)
 				close(fd_temp);
 #else