Fix parantheses on return and sizeof statements.

Used script:
```
import re
import sys

for arg in sys.argv[1:]:
    print(arg)
    with open(arg, 'r') as file:
        content = file.read()
        content = re.sub(r"return\s?\((?!.*\).*\()\s*\n?(.*)\n?\);", r"return \1;", \
            content, flags = re.M)
        content = re.sub(r"sizeof ([^\(][a-zA-Z0-9_\[\]]*)", r"sizeof(\1)",\
            content, flags = re.M)
    with open(arg, 'w') as file:
        file.write(content)

```
Executed with:
` find . -regextype posix-egrep -regex ".*\.([hc]|fmt|function)" | xargs -L1 python script.py`

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/programs/fuzz/common.c b/programs/fuzz/common.c
index ac39ee2..70a5380 100644
--- a/programs/fuzz/common.c
+++ b/programs/fuzz/common.c
@@ -27,9 +27,9 @@
 
     //pretends we wrote everything ok
     if( len > INT_MAX ) {
-        return( -1 );
+        return -1 ;
     }
-    return( (int) len );
+    return (int) len ;
 }
 
 int fuzz_recv( void *ctx, unsigned char *buf, size_t len )
@@ -39,10 +39,10 @@
 
     if(biomemfuzz->Offset == biomemfuzz->Size) {
         //EOF
-        return( 0 );
+        return 0 ;
     }
     if( len > INT_MAX ) {
-        return( -1 );
+        return -1 ;
     }
     if( len + biomemfuzz->Offset > biomemfuzz->Size ) {
         //do not overflow
@@ -50,7 +50,7 @@
     }
     memcpy(buf, biomemfuzz->Data + biomemfuzz->Offset, len);
     biomemfuzz->Offset += len;
-    return( (int) len );
+    return (int) len ;
 }
 
 int dummy_random( void *p_rng, unsigned char *output, size_t output_len )
@@ -69,7 +69,7 @@
         //replace result with pseudo random
         output[i] = (unsigned char) rand();
     }
-    return( ret );
+    return ret ;
 }
 
 int dummy_entropy( void *data, unsigned char *output, size_t len )
@@ -84,7 +84,7 @@
         //replace result with pseudo random
         output[i] = (unsigned char) rand();
     }
-    return( 0 );
+    return 0 ;
 }
 
 int fuzz_recv_timeout( void *ctx, unsigned char *buf, size_t len,